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Finding the Fourth Proportional to 7,671.58, 10,587.80 and 5,687.80

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Solution

The fourth proportional to 7,671.58, 10,587.80 and 5,687.80 is: 7,849.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,671.58 : 10,587.80 = 5,687.80 : x
  2. Step 2: Convert to fraction form
    7,671.58/10,587.80 = 5,687.80/x
  3. Step 3: Cross multiply
    7,671.58x = 10,587.80 × 5,687.80
  4. Step 4: Simplify right side
    7,671.58x = 60,221,276.59
  5. Step 5: Solve for x
    x = 60,221,276.59/7,671.58
  6. Step 6: Final answer
    x = 7,849.92

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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.