Home / 1,397.04-2,080.35-1,381.70

Finding the Fourth Proportional to 1,397.04, 2,080.35 and 1,381.70

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Solution

The fourth proportional to 1,397.04, 2,080.35 and 1,381.70 is: 2,057.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397.04 : 2,080.35 = 1,381.70 : x
  2. Step 2: Convert to fraction form
    1,397.04/2,080.35 = 1,381.70/x
  3. Step 3: Cross multiply
    1,397.04x = 2,080.35 × 1,381.70
  4. Step 4: Simplify right side
    1,397.04x = 2,874,419.60
  5. Step 5: Solve for x
    x = 2,874,419.60/1,397.04
  6. Step 6: Final answer
    x = 2,057.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.