Home / 1,004.40-1,385.51-611.15

Finding the Fourth Proportional to 1,004.40, 1,385.51 and 611.15

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Solution

The fourth proportional to 1,004.40, 1,385.51 and 611.15 is: 843.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004.40 : 1,385.51 = 611.15 : x
  2. Step 2: Convert to fraction form
    1,004.40/1,385.51 = 611.15/x
  3. Step 3: Cross multiply
    1,004.40x = 1,385.51 × 611.15
  4. Step 4: Simplify right side
    1,004.40x = 846,744.45
  5. Step 5: Solve for x
    x = 846,744.45/1,004.40
  6. Step 6: Final answer
    x = 843.04

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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.