Home / 2,686.05-3,706.70-1,490.97

Finding the Fourth Proportional to 2,686.05, 3,706.70 and 1,490.97

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Solution

The fourth proportional to 2,686.05, 3,706.70 and 1,490.97 is: 2,057.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.05 : 3,706.70 = 1,490.97 : x
  2. Step 2: Convert to fraction form
    2,686.05/3,706.70 = 1,490.97/x
  3. Step 3: Cross multiply
    2,686.05x = 3,706.70 × 1,490.97
  4. Step 4: Simplify right side
    2,686.05x = 5,526,576.64
  5. Step 5: Solve for x
    x = 5,526,576.64/2,686.05
  6. Step 6: Final answer
    x = 2,057.51

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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.