Home / 1,412.01-2,117.24-1,121.38

Finding the Fourth Proportional to 1,412.01, 2,117.24 and 1,121.38

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Solution

The fourth proportional to 1,412.01, 2,117.24 and 1,121.38 is: 1,681.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.01 : 2,117.24 = 1,121.38 : x
  2. Step 2: Convert to fraction form
    1,412.01/2,117.24 = 1,121.38/x
  3. Step 3: Cross multiply
    1,412.01x = 2,117.24 × 1,121.38
  4. Step 4: Simplify right side
    1,412.01x = 2,374,228.10
  5. Step 5: Solve for x
    x = 2,374,228.10/1,412.01
  6. Step 6: Final answer
    x = 1,681.45

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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.