Home / 9,985.28-13,781.76-6,268.16

Finding the Fourth Proportional to 9,985.28, 13,781.76 and 6,268.16

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Solution

The fourth proportional to 9,985.28, 13,781.76 and 6,268.16 is: 8,651.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.28 : 13,781.76 = 6,268.16 : x
  2. Step 2: Convert to fraction form
    9,985.28/13,781.76 = 6,268.16/x
  3. Step 3: Cross multiply
    9,985.28x = 13,781.76 × 6,268.16
  4. Step 4: Simplify right side
    9,985.28x = 86,386,276.76
  5. Step 5: Solve for x
    x = 86,386,276.76/9,985.28
  6. Step 6: Final answer
    x = 8,651.36

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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.