Home / 1,177.20-1,622.34-928.26

Finding the Fourth Proportional to 1,177.20, 1,622.34 and 928.26

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Solution

The fourth proportional to 1,177.20, 1,622.34 and 928.26 is: 1,279.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.20 : 1,622.34 = 928.26 : x
  2. Step 2: Convert to fraction form
    1,177.20/1,622.34 = 928.26/x
  3. Step 3: Cross multiply
    1,177.20x = 1,622.34 × 928.26
  4. Step 4: Simplify right side
    1,177.20x = 1,505,953.33
  5. Step 5: Solve for x
    x = 1,505,953.33/1,177.20
  6. Step 6: Final answer
    x = 1,279.27

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1.5x scale

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.