Home / 2,689.22-3,711.12-1,510.40

Finding the Fourth Proportional to 2,689.22, 3,711.12 and 1,510.40

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Solution

The fourth proportional to 2,689.22, 3,711.12 and 1,510.40 is: 2,084.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.22 : 3,711.12 = 1,510.40 : x
  2. Step 2: Convert to fraction form
    2,689.22/3,711.12 = 1,510.40/x
  3. Step 3: Cross multiply
    2,689.22x = 3,711.12 × 1,510.40
  4. Step 4: Simplify right side
    2,689.22x = 5,605,275.65
  5. Step 5: Solve for x
    x = 5,605,275.65/2,689.22
  6. Step 6: Final answer
    x = 2,084.35

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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.