Home / 9,400.32-12,972.39-5,151.40

Finding the Fourth Proportional to 9,400.32, 12,972.39 and 5,151.40

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Solution

The fourth proportional to 9,400.32, 12,972.39 and 5,151.40 is: 7,108.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,400.32 : 12,972.39 = 5,151.40 : x
  2. Step 2: Convert to fraction form
    9,400.32/12,972.39 = 5,151.40/x
  3. Step 3: Cross multiply
    9,400.32x = 12,972.39 × 5,151.40
  4. Step 4: Simplify right side
    9,400.32x = 66,825,918.10
  5. Step 5: Solve for x
    x = 66,825,918.10/9,400.32
  6. Step 6: Final answer
    x = 7,108.90

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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.