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Finding the Fourth Proportional to 7,160.16, 9,881.76 and 4,016.64

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Solution

The fourth proportional to 7,160.16, 9,881.76 and 4,016.64 is: 5,543.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,160.16 : 9,881.76 = 4,016.64 : x
  2. Step 2: Convert to fraction form
    7,160.16/9,881.76 = 4,016.64/x
  3. Step 3: Cross multiply
    7,160.16x = 9,881.76 × 4,016.64
  4. Step 4: Simplify right side
    7,160.16x = 39,691,472.49
  5. Step 5: Solve for x
    x = 39,691,472.49/7,160.16
  6. Step 6: Final answer
    x = 5,543.38

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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.