Home / 8,904.32-13,356.48-3,972.78

Finding the Fourth Proportional to 8,904.32, 13,356.48 and 3,972.78

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Solution

The fourth proportional to 8,904.32, 13,356.48 and 3,972.78 is: 5,959.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,904.32 : 13,356.48 = 3,972.78 : x
  2. Step 2: Convert to fraction form
    8,904.32/13,356.48 = 3,972.78/x
  3. Step 3: Cross multiply
    8,904.32x = 13,356.48 × 3,972.78
  4. Step 4: Simplify right side
    8,904.32x = 53,062,356.61
  5. Step 5: Solve for x
    x = 53,062,356.61/8,904.32
  6. Step 6: Final answer
    x = 5,959.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.