Home / 9,179.95-12,668.29-5,403.09

Finding the Fourth Proportional to 9,179.95, 12,668.29 and 5,403.09

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Solution

The fourth proportional to 9,179.95, 12,668.29 and 5,403.09 is: 7,456.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179.95 : 12,668.29 = 5,403.09 : x
  2. Step 2: Convert to fraction form
    9,179.95/12,668.29 = 5,403.09/x
  3. Step 3: Cross multiply
    9,179.95x = 12,668.29 × 5,403.09
  4. Step 4: Simplify right side
    9,179.95x = 68,447,911.02
  5. Step 5: Solve for x
    x = 68,447,911.02/9,179.95
  6. Step 6: Final answer
    x = 7,456.24

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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.