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Finding the Fourth Proportional to 7,309.86, 10,087.53 and 3,952.63

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Solution

The fourth proportional to 7,309.86, 10,087.53 and 3,952.63 is: 5,454.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,309.86 : 10,087.53 = 3,952.63 : x
  2. Step 2: Convert to fraction form
    7,309.86/10,087.53 = 3,952.63/x
  3. Step 3: Cross multiply
    7,309.86x = 10,087.53 × 3,952.63
  4. Step 4: Simplify right side
    7,309.86x = 39,872,273.70
  5. Step 5: Solve for x
    x = 39,872,273.70/7,309.86
  6. Step 6: Final answer
    x = 5,454.59

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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.