Home / 9,126.76-12,595.42-5,147.12

Finding the Fourth Proportional to 9,126.76, 12,595.42 and 5,147.12

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Solution

The fourth proportional to 9,126.76, 12,595.42 and 5,147.12 is: 7,103.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,126.76 : 12,595.42 = 5,147.12 : x
  2. Step 2: Convert to fraction form
    9,126.76/12,595.42 = 5,147.12/x
  3. Step 3: Cross multiply
    9,126.76x = 12,595.42 × 5,147.12
  4. Step 4: Simplify right side
    9,126.76x = 64,830,138.19
  5. Step 5: Solve for x
    x = 64,830,138.19/9,126.76
  6. Step 6: Final answer
    x = 7,103.30

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Half scale
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Double scale
Find fourth proportional to 9,127.76, 12,596.80 and 5,148.12
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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.