Home / 9,004.38-12,420.52-5,979.63

Finding the Fourth Proportional to 9,004.38, 12,420.52 and 5,979.63

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Solution

The fourth proportional to 9,004.38, 12,420.52 and 5,979.63 is: 8,248.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,004.38 : 12,420.52 = 5,979.63 : x
  2. Step 2: Convert to fraction form
    9,004.38/12,420.52 = 5,979.63/x
  3. Step 3: Cross multiply
    9,004.38x = 12,420.52 × 5,979.63
  4. Step 4: Simplify right side
    9,004.38x = 74,270,114.01
  5. Step 5: Solve for x
    x = 74,270,114.01/9,004.38
  6. Step 6: Final answer
    x = 8,248.22

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Half scale
Find fourth proportional to 18,008.76, 24,841.04 and 11,959.26
Double scale
Find fourth proportional to 9,005.38, 12,421.90 and 5,980.63
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.