Home / 3,130.73-4,686.53-2,687.87

Finding the Fourth Proportional to 3,130.73, 4,686.53 and 2,687.87

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Solution

The fourth proportional to 3,130.73, 4,686.53 and 2,687.87 is: 4,023.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.73 : 4,686.53 = 2,687.87 : x
  2. Step 2: Convert to fraction form
    3,130.73/4,686.53 = 2,687.87/x
  3. Step 3: Cross multiply
    3,130.73x = 4,686.53 × 2,687.87
  4. Step 4: Simplify right side
    3,130.73x = 12,596,746.52
  5. Step 5: Solve for x
    x = 12,596,746.52/3,130.73
  6. Step 6: Final answer
    x = 4,023.58

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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.