Home / 1,386.18-2,080.02-736.92

Finding the Fourth Proportional to 1,386.18, 2,080.02 and 736.92

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Solution

The fourth proportional to 1,386.18, 2,080.02 and 736.92 is: 1,105.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.18 : 2,080.02 = 736.92 : x
  2. Step 2: Convert to fraction form
    1,386.18/2,080.02 = 736.92/x
  3. Step 3: Cross multiply
    1,386.18x = 2,080.02 × 736.92
  4. Step 4: Simplify right side
    1,386.18x = 1,532,808.34
  5. Step 5: Solve for x
    x = 1,532,808.34/1,386.18
  6. Step 6: Final answer
    x = 1,105.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.