Home / 5,686.60-8,529.90-1,791.40

Finding the Fourth Proportional to 5,686.60, 8,529.90 and 1,791.40

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Solution

The fourth proportional to 5,686.60, 8,529.90 and 1,791.40 is: 2,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,686.60 : 8,529.90 = 1,791.40 : x
  2. Step 2: Convert to fraction form
    5,686.60/8,529.90 = 1,791.40/x
  3. Step 3: Cross multiply
    5,686.60x = 8,529.90 × 1,791.40
  4. Step 4: Simplify right side
    5,686.60x = 15,280,462.86
  5. Step 5: Solve for x
    x = 15,280,462.86/5,686.60
  6. Step 6: Final answer
    x = 2,687.10

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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.