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Finding the Fourth Proportional to 5,076, 7,007.61 and 3,188.16

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Solution

The fourth proportional to 5,076, 7,007.61 and 3,188.16 is: 4,401.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,076 : 7,007.61 = 3,188.16 : x
  2. Step 2: Convert to fraction form
    5,076/7,007.61 = 3,188.16/x
  3. Step 3: Cross multiply
    5,076x = 7,007.61 × 3,188.16
  4. Step 4: Simplify right side
    5,076x = 22,341,381.90
  5. Step 5: Solve for x
    x = 22,341,381.90/5,076
  6. Step 6: Final answer
    x = 4,401.38

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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.