Home / 2,686.08-3,706.38-1,506.90

Finding the Fourth Proportional to 2,686.08, 3,706.38 and 1,506.90

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Solution

The fourth proportional to 2,686.08, 3,706.38 and 1,506.90 is: 2,079.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.08 : 3,706.38 = 1,506.90 : x
  2. Step 2: Convert to fraction form
    2,686.08/3,706.38 = 1,506.90/x
  3. Step 3: Cross multiply
    2,686.08x = 3,706.38 × 1,506.90
  4. Step 4: Simplify right side
    2,686.08x = 5,585,144.02
  5. Step 5: Solve for x
    x = 5,585,144.02/2,686.08
  6. Step 6: Final answer
    x = 2,079.29

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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.