Home / 2,689.31-3,711.26-1,510.40

Finding the Fourth Proportional to 2,689.31, 3,711.26 and 1,510.40

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Solution

The fourth proportional to 2,689.31, 3,711.26 and 1,510.40 is: 2,084.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.31 : 3,711.26 = 1,510.40 : x
  2. Step 2: Convert to fraction form
    2,689.31/3,711.26 = 1,510.40/x
  3. Step 3: Cross multiply
    2,689.31x = 3,711.26 × 1,510.40
  4. Step 4: Simplify right side
    2,689.31x = 5,605,500.16
  5. Step 5: Solve for x
    x = 5,605,500.16/2,689.31
  6. Step 6: Final answer
    x = 2,084.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.