Home / 1,124.23-1,551.40-626.86

Finding the Fourth Proportional to 1,124.23, 1,551.40 and 626.86

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Solution

The fourth proportional to 1,124.23, 1,551.40 and 626.86 is: 865.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124.23 : 1,551.40 = 626.86 : x
  2. Step 2: Convert to fraction form
    1,124.23/1,551.40 = 626.86/x
  3. Step 3: Cross multiply
    1,124.23x = 1,551.40 × 626.86
  4. Step 4: Simplify right side
    1,124.23x = 972,509.05
  5. Step 5: Solve for x
    x = 972,509.05/1,124.23
  6. Step 6: Final answer
    x = 865.05

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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.