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Finding the Fourth Proportional to 5,281.67, 7,289.87 and 3,489.45

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Solution

The fourth proportional to 5,281.67, 7,289.87 and 3,489.45 is: 4,816.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.67 : 7,289.87 = 3,489.45 : x
  2. Step 2: Convert to fraction form
    5,281.67/7,289.87 = 3,489.45/x
  3. Step 3: Cross multiply
    5,281.67x = 7,289.87 × 3,489.45
  4. Step 4: Simplify right side
    5,281.67x = 25,437,592.09
  5. Step 5: Solve for x
    x = 25,437,592.09/5,281.67
  6. Step 6: Final answer
    x = 4,816.20

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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.