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Finding the Fourth Proportional to 5,752.67, 7,938.60 and 3,200.40

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Solution

The fourth proportional to 5,752.67, 7,938.60 and 3,200.40 is: 4,416.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,752.67 : 7,938.60 = 3,200.40 : x
  2. Step 2: Convert to fraction form
    5,752.67/7,938.60 = 3,200.40/x
  3. Step 3: Cross multiply
    5,752.67x = 7,938.60 × 3,200.40
  4. Step 4: Simplify right side
    5,752.67x = 25,406,695.44
  5. Step 5: Solve for x
    x = 25,406,695.44/5,752.67
  6. Step 6: Final answer
    x = 4,416.50

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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.