Home / 9,012.28-12,452.16-6,489.40

Finding the Fourth Proportional to 9,012.28, 12,452.16 and 6,489.40

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Solution

The fourth proportional to 9,012.28, 12,452.16 and 6,489.40 is: 8,966.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,012.28 : 12,452.16 = 6,489.40 : x
  2. Step 2: Convert to fraction form
    9,012.28/12,452.16 = 6,489.40/x
  3. Step 3: Cross multiply
    9,012.28x = 12,452.16 × 6,489.40
  4. Step 4: Simplify right side
    9,012.28x = 80,807,047.10
  5. Step 5: Solve for x
    x = 80,807,047.10/9,012.28
  6. Step 6: Final answer
    x = 8,966.33

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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.