Home / 2,686.90-3,707.98-1,508.20

Finding the Fourth Proportional to 2,686.90, 3,707.98 and 1,508.20

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Solution

The fourth proportional to 2,686.90, 3,707.98 and 1,508.20 is: 2,081.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.90 : 3,707.98 = 1,508.20 : x
  2. Step 2: Convert to fraction form
    2,686.90/3,707.98 = 1,508.20/x
  3. Step 3: Cross multiply
    2,686.90x = 3,707.98 × 1,508.20
  4. Step 4: Simplify right side
    2,686.90x = 5,592,375.44
  5. Step 5: Solve for x
    x = 5,592,375.44/2,686.90
  6. Step 6: Final answer
    x = 2,081.35

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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.