Home / 9,721.60-14,572.80-4,787.20

Finding the Fourth Proportional to 9,721.60, 14,572.80 and 4,787.20

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Solution

The fourth proportional to 9,721.60, 14,572.80 and 4,787.20 is: 7,176.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.60 : 14,572.80 = 4,787.20 : x
  2. Step 2: Convert to fraction form
    9,721.60/14,572.80 = 4,787.20/x
  3. Step 3: Cross multiply
    9,721.60x = 14,572.80 × 4,787.20
  4. Step 4: Simplify right side
    9,721.60x = 69,762,908.16
  5. Step 5: Solve for x
    x = 69,762,908.16/9,721.60
  6. Step 6: Final answer
    x = 7,176.07

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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.