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Finding the Fourth Proportional to 2,689.35, 3,711.15 and 1,510.44

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Solution

The fourth proportional to 2,689.35, 3,711.15 and 1,510.44 is: 2,084.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.35 : 3,711.15 = 1,510.44 : x
  2. Step 2: Convert to fraction form
    2,689.35/3,711.15 = 1,510.44/x
  3. Step 3: Cross multiply
    2,689.35x = 3,711.15 × 1,510.44
  4. Step 4: Simplify right side
    2,689.35x = 5,605,469.41
  5. Step 5: Solve for x
    x = 5,605,469.41/2,689.35
  6. Step 6: Final answer
    x = 2,084.32

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1.5x scale

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.