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Finding the Fourth Proportional to 7,239.55, 9,995.07 and 5,557.74

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Solution

The fourth proportional to 7,239.55, 9,995.07 and 5,557.74 is: 7,673.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.55 : 9,995.07 = 5,557.74 : x
  2. Step 2: Convert to fraction form
    7,239.55/9,995.07 = 5,557.74/x
  3. Step 3: Cross multiply
    7,239.55x = 9,995.07 × 5,557.74
  4. Step 4: Simplify right side
    7,239.55x = 55,550,000.34
  5. Step 5: Solve for x
    x = 55,550,000.34/7,239.55
  6. Step 6: Final answer
    x = 7,673.13

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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.