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Finding the Fourth Proportional to 7,187.92, 9,918.64 and 5,300.53

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Solution

The fourth proportional to 7,187.92, 9,918.64 and 5,300.53 is: 7,314.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187.92 : 9,918.64 = 5,300.53 : x
  2. Step 2: Convert to fraction form
    7,187.92/9,918.64 = 5,300.53/x
  3. Step 3: Cross multiply
    7,187.92x = 9,918.64 × 5,300.53
  4. Step 4: Simplify right side
    7,187.92x = 52,573,972.78
  5. Step 5: Solve for x
    x = 52,573,972.78/7,187.92
  6. Step 6: Final answer
    x = 7,314.22

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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.