Home / 1,412.25-2,117.11-718.53

Finding the Fourth Proportional to 1,412.25, 2,117.11 and 718.53

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Solution

The fourth proportional to 1,412.25, 2,117.11 and 718.53 is: 1,077.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.25 : 2,117.11 = 718.53 : x
  2. Step 2: Convert to fraction form
    1,412.25/2,117.11 = 718.53/x
  3. Step 3: Cross multiply
    1,412.25x = 2,117.11 × 718.53
  4. Step 4: Simplify right side
    1,412.25x = 1,521,207.05
  5. Step 5: Solve for x
    x = 1,521,207.05/1,412.25
  6. Step 6: Final answer
    x = 1,077.15

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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.