Home / 3,877.60-5,817.42-1,686.76

Finding the Fourth Proportional to 3,877.60, 5,817.42 and 1,686.76

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Solution

The fourth proportional to 3,877.60, 5,817.42 and 1,686.76 is: 2,530.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.60 : 5,817.42 = 1,686.76 : x
  2. Step 2: Convert to fraction form
    3,877.60/5,817.42 = 1,686.76/x
  3. Step 3: Cross multiply
    3,877.60x = 5,817.42 × 1,686.76
  4. Step 4: Simplify right side
    3,877.60x = 9,812,591.36
  5. Step 5: Solve for x
    x = 9,812,591.36/3,877.60
  6. Step 6: Final answer
    x = 2,530.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.