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Finding the Fourth Proportional to 5,752.68, 7,938.80 and 3,200.50

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Solution

The fourth proportional to 5,752.68, 7,938.80 and 3,200.50 is: 4,416.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,752.68 : 7,938.80 = 3,200.50 : x
  2. Step 2: Convert to fraction form
    5,752.68/7,938.80 = 3,200.50/x
  3. Step 3: Cross multiply
    5,752.68x = 7,938.80 × 3,200.50
  4. Step 4: Simplify right side
    5,752.68x = 25,408,129.40
  5. Step 5: Solve for x
    x = 25,408,129.40/5,752.68
  6. Step 6: Final answer
    x = 4,416.75

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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.