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Finding the Fourth Proportional to 7,640.55, 10,529.68 and 5,959.30

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Solution

The fourth proportional to 7,640.55, 10,529.68 and 5,959.30 is: 8,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,640.55 : 10,529.68 = 5,959.30 : x
  2. Step 2: Convert to fraction form
    7,640.55/10,529.68 = 5,959.30/x
  3. Step 3: Cross multiply
    7,640.55x = 10,529.68 × 5,959.30
  4. Step 4: Simplify right side
    7,640.55x = 62,749,522.02
  5. Step 5: Solve for x
    x = 62,749,522.02/7,640.55
  6. Step 6: Final answer
    x = 8,212.70

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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.