Home / 1,224.27-1,688.94-1,177.11

Finding the Fourth Proportional to 1,224.27, 1,688.94 and 1,177.11

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Solution

The fourth proportional to 1,224.27, 1,688.94 and 1,177.11 is: 1,623.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.27 : 1,688.94 = 1,177.11 : x
  2. Step 2: Convert to fraction form
    1,224.27/1,688.94 = 1,177.11/x
  3. Step 3: Cross multiply
    1,224.27x = 1,688.94 × 1,177.11
  4. Step 4: Simplify right side
    1,224.27x = 1,988,068.16
  5. Step 5: Solve for x
    x = 1,988,068.16/1,224.27
  6. Step 6: Final answer
    x = 1,623.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.