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Finding the Fourth Proportional to 5,608.76, 7,740.08 and 3,124.76

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Solution

The fourth proportional to 5,608.76, 7,740.08 and 3,124.76 is: 4,312.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.76 : 7,740.08 = 3,124.76 : x
  2. Step 2: Convert to fraction form
    5,608.76/7,740.08 = 3,124.76/x
  3. Step 3: Cross multiply
    5,608.76x = 7,740.08 × 3,124.76
  4. Step 4: Simplify right side
    5,608.76x = 24,185,892.38
  5. Step 5: Solve for x
    x = 24,185,892.38/5,608.76
  6. Step 6: Final answer
    x = 4,312.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.