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Finding the Fourth Proportional to 5,248.76, 7,872.96 and 1,960.88

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Solution

The fourth proportional to 5,248.76, 7,872.96 and 1,960.88 is: 2,941.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.76 : 7,872.96 = 1,960.88 : x
  2. Step 2: Convert to fraction form
    5,248.76/7,872.96 = 1,960.88/x
  3. Step 3: Cross multiply
    5,248.76x = 7,872.96 × 1,960.88
  4. Step 4: Simplify right side
    5,248.76x = 15,437,929.80
  5. Step 5: Solve for x
    x = 15,437,929.80/5,248.76
  6. Step 6: Final answer
    x = 2,941.25

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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.