Home / 1,247.17-1,870.14-727.36

Finding the Fourth Proportional to 1,247.17, 1,870.14 and 727.36

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Solution

The fourth proportional to 1,247.17, 1,870.14 and 727.36 is: 1,090.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.17 : 1,870.14 = 727.36 : x
  2. Step 2: Convert to fraction form
    1,247.17/1,870.14 = 727.36/x
  3. Step 3: Cross multiply
    1,247.17x = 1,870.14 × 727.36
  4. Step 4: Simplify right side
    1,247.17x = 1,360,265.03
  5. Step 5: Solve for x
    x = 1,360,265.03/1,247.17
  6. Step 6: Final answer
    x = 1,090.68

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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.