Home / 1,242.84-1,862.64-1,112.04

Finding the Fourth Proportional to 1,242.84, 1,862.64 and 1,112.04

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Solution

The fourth proportional to 1,242.84, 1,862.64 and 1,112.04 is: 1,666.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242.84 : 1,862.64 = 1,112.04 : x
  2. Step 2: Convert to fraction form
    1,242.84/1,862.64 = 1,112.04/x
  3. Step 3: Cross multiply
    1,242.84x = 1,862.64 × 1,112.04
  4. Step 4: Simplify right side
    1,242.84x = 2,071,330.19
  5. Step 5: Solve for x
    x = 2,071,330.19/1,242.84
  6. Step 6: Final answer
    x = 1,666.61

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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.