Home / 1,124.08-1,551.26-626.78

Finding the Fourth Proportional to 1,124.08, 1,551.26 and 626.78

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Solution

The fourth proportional to 1,124.08, 1,551.26 and 626.78 is: 864.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124.08 : 1,551.26 = 626.78 : x
  2. Step 2: Convert to fraction form
    1,124.08/1,551.26 = 626.78/x
  3. Step 3: Cross multiply
    1,124.08x = 1,551.26 × 626.78
  4. Step 4: Simplify right side
    1,124.08x = 972,298.74
  5. Step 5: Solve for x
    x = 972,298.74/1,124.08
  6. Step 6: Final answer
    x = 864.97

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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.