Home / 1,207.26-1,811.28-557.64

Finding the Fourth Proportional to 1,207.26, 1,811.28 and 557.64

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Solution

The fourth proportional to 1,207.26, 1,811.28 and 557.64 is: 836.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.26 : 1,811.28 = 557.64 : x
  2. Step 2: Convert to fraction form
    1,207.26/1,811.28 = 557.64/x
  3. Step 3: Cross multiply
    1,207.26x = 1,811.28 × 557.64
  4. Step 4: Simplify right side
    1,207.26x = 1,010,042.18
  5. Step 5: Solve for x
    x = 1,010,042.18/1,207.26
  6. Step 6: Final answer
    x = 836.64

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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.