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Finding the Fourth Proportional to 7,918.70, 10,942.22 and 7,534.35

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Solution

The fourth proportional to 7,918.70, 10,942.22 and 7,534.35 is: 10,411.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.70 : 10,942.22 = 7,534.35 : x
  2. Step 2: Convert to fraction form
    7,918.70/10,942.22 = 7,534.35/x
  3. Step 3: Cross multiply
    7,918.70x = 10,942.22 × 7,534.35
  4. Step 4: Simplify right side
    7,918.70x = 82,442,534.09
  5. Step 5: Solve for x
    x = 82,442,534.09/7,918.70
  6. Step 6: Final answer
    x = 10,411.13

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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.