Home / 2,686.14-3,706.76-1,507.20

Finding the Fourth Proportional to 2,686.14, 3,706.76 and 1,507.20

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Solution

The fourth proportional to 2,686.14, 3,706.76 and 1,507.20 is: 2,079.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.14 : 3,706.76 = 1,507.20 : x
  2. Step 2: Convert to fraction form
    2,686.14/3,706.76 = 1,507.20/x
  3. Step 3: Cross multiply
    2,686.14x = 3,706.76 × 1,507.20
  4. Step 4: Simplify right side
    2,686.14x = 5,586,828.67
  5. Step 5: Solve for x
    x = 5,586,828.67/2,686.14
  6. Step 6: Final answer
    x = 2,079.87

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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.