Home / 7,686.60-11,528.51-2,689.71

Finding the Fourth Proportional to 7,686.60, 11,528.51 and 2,689.71

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Solution

The fourth proportional to 7,686.60, 11,528.51 and 2,689.71 is: 4,034.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,686.60 : 11,528.51 = 2,689.71 : x
  2. Step 2: Convert to fraction form
    7,686.60/11,528.51 = 2,689.71/x
  3. Step 3: Cross multiply
    7,686.60x = 11,528.51 × 2,689.71
  4. Step 4: Simplify right side
    7,686.60x = 31,008,335.18
  5. Step 5: Solve for x
    x = 31,008,335.18/7,686.60
  6. Step 6: Final answer
    x = 4,034.08

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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.