Home / 2,689.08-3,711-1,510.20

Finding the Fourth Proportional to 2,689.08, 3,711 and 1,510.20

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Solution

The fourth proportional to 2,689.08, 3,711 and 1,510.20 is: 2,084.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.08 : 3,711 = 1,510.20 : x
  2. Step 2: Convert to fraction form
    2,689.08/3,711 = 1,510.20/x
  3. Step 3: Cross multiply
    2,689.08x = 3,711 × 1,510.20
  4. Step 4: Simplify right side
    2,689.08x = 5,604,352.20
  5. Step 5: Solve for x
    x = 5,604,352.20/2,689.08
  6. Step 6: Final answer
    x = 2,084.12

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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.