Home / 2,686.40-4,028.58-1,515.14

Finding the Fourth Proportional to 2,686.40, 4,028.58 and 1,515.14

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Solution

The fourth proportional to 2,686.40, 4,028.58 and 1,515.14 is: 2,272.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.40 : 4,028.58 = 1,515.14 : x
  2. Step 2: Convert to fraction form
    2,686.40/4,028.58 = 1,515.14/x
  3. Step 3: Cross multiply
    2,686.40x = 4,028.58 × 1,515.14
  4. Step 4: Simplify right side
    2,686.40x = 6,103,862.70
  5. Step 5: Solve for x
    x = 6,103,862.70/2,686.40
  6. Step 6: Final answer
    x = 2,272.13

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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.