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Finding the Fourth Proportional to 5,538.70, 7,646.53 and 3,839.68

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Solution

The fourth proportional to 5,538.70, 7,646.53 and 3,839.68 is: 5,300.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,538.70 : 7,646.53 = 3,839.68 : x
  2. Step 2: Convert to fraction form
    5,538.70/7,646.53 = 3,839.68/x
  3. Step 3: Cross multiply
    5,538.70x = 7,646.53 × 3,839.68
  4. Step 4: Simplify right side
    5,538.70x = 29,360,228.31
  5. Step 5: Solve for x
    x = 29,360,228.31/5,538.70
  6. Step 6: Final answer
    x = 5,300.92

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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.