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Finding the Fourth Proportional to 5,397.70, 7,448.70 and 3,039.85

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Solution

The fourth proportional to 5,397.70, 7,448.70 and 3,039.85 is: 4,194.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,397.70 : 7,448.70 = 3,039.85 : x
  2. Step 2: Convert to fraction form
    5,397.70/7,448.70 = 3,039.85/x
  3. Step 3: Cross multiply
    5,397.70x = 7,448.70 × 3,039.85
  4. Step 4: Simplify right side
    5,397.70x = 22,642,930.70
  5. Step 5: Solve for x
    x = 22,642,930.70/5,397.70
  6. Step 6: Final answer
    x = 4,194.92

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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.