Home / 1,386.02-2,079.31-736.58

Finding the Fourth Proportional to 1,386.02, 2,079.31 and 736.58

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Solution

The fourth proportional to 1,386.02, 2,079.31 and 736.58 is: 1,105.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.02 : 2,079.31 = 736.58 : x
  2. Step 2: Convert to fraction form
    1,386.02/2,079.31 = 736.58/x
  3. Step 3: Cross multiply
    1,386.02x = 2,079.31 × 736.58
  4. Step 4: Simplify right side
    1,386.02x = 1,531,578.16
  5. Step 5: Solve for x
    x = 1,531,578.16/1,386.02
  6. Step 6: Final answer
    x = 1,105.02

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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.