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Finding the Fourth Proportional to 7,639.50, 10,542.51 and 4,327.50

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Solution

The fourth proportional to 7,639.50, 10,542.51 and 4,327.50 is: 5,971.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.50 : 10,542.51 = 4,327.50 : x
  2. Step 2: Convert to fraction form
    7,639.50/10,542.51 = 4,327.50/x
  3. Step 3: Cross multiply
    7,639.50x = 10,542.51 × 4,327.50
  4. Step 4: Simplify right side
    7,639.50x = 45,622,712.03
  5. Step 5: Solve for x
    x = 45,622,712.03/7,639.50
  6. Step 6: Final answer
    x = 5,971.95

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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.