Home / 7,787.52-11,681.28-5,171.76

Finding the Fourth Proportional to 7,787.52, 11,681.28 and 5,171.76

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Solution

The fourth proportional to 7,787.52, 11,681.28 and 5,171.76 is: 7,757.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.52 : 11,681.28 = 5,171.76 : x
  2. Step 2: Convert to fraction form
    7,787.52/11,681.28 = 5,171.76/x
  3. Step 3: Cross multiply
    7,787.52x = 11,681.28 × 5,171.76
  4. Step 4: Simplify right side
    7,787.52x = 60,412,776.65
  5. Step 5: Solve for x
    x = 60,412,776.65/7,787.52
  6. Step 6: Final answer
    x = 7,757.64

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1.5x scale

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.