Home / 8,643.92-11,925.48-5,107.28

Finding the Fourth Proportional to 8,643.92, 11,925.48 and 5,107.28

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Solution

The fourth proportional to 8,643.92, 11,925.48 and 5,107.28 is: 7,046.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.92 : 11,925.48 = 5,107.28 : x
  2. Step 2: Convert to fraction form
    8,643.92/11,925.48 = 5,107.28/x
  3. Step 3: Cross multiply
    8,643.92x = 11,925.48 × 5,107.28
  4. Step 4: Simplify right side
    8,643.92x = 60,906,765.49
  5. Step 5: Solve for x
    x = 60,906,765.49/8,643.92
  6. Step 6: Final answer
    x = 7,046.20

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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.