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Finding the Fourth Proportional to 7,710.60, 10,640.61 and 4,173.81

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Solution

The fourth proportional to 7,710.60, 10,640.61 and 4,173.81 is: 5,759.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,710.60 : 10,640.61 = 4,173.81 : x
  2. Step 2: Convert to fraction form
    7,710.60/10,640.61 = 4,173.81/x
  3. Step 3: Cross multiply
    7,710.60x = 10,640.61 × 4,173.81
  4. Step 4: Simplify right side
    7,710.60x = 44,411,884.42
  5. Step 5: Solve for x
    x = 44,411,884.42/7,710.60
  6. Step 6: Final answer
    x = 5,759.85

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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.