Home / 9,981.28-14,975.16-4,787.56

Finding the Fourth Proportional to 9,981.28, 14,975.16 and 4,787.56

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Solution

The fourth proportional to 9,981.28, 14,975.16 and 4,787.56 is: 7,182.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,981.28 : 14,975.16 = 4,787.56 : x
  2. Step 2: Convert to fraction form
    9,981.28/14,975.16 = 4,787.56/x
  3. Step 3: Cross multiply
    9,981.28x = 14,975.16 × 4,787.56
  4. Step 4: Simplify right side
    9,981.28x = 71,694,477.01
  5. Step 5: Solve for x
    x = 71,694,477.01/9,981.28
  6. Step 6: Final answer
    x = 7,182.89

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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.