Home / 1,728.55-2,385.38-942.60

Finding the Fourth Proportional to 1,728.55, 2,385.38 and 942.60

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Solution

The fourth proportional to 1,728.55, 2,385.38 and 942.60 is: 1,300.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.55 : 2,385.38 = 942.60 : x
  2. Step 2: Convert to fraction form
    1,728.55/2,385.38 = 942.60/x
  3. Step 3: Cross multiply
    1,728.55x = 2,385.38 × 942.60
  4. Step 4: Simplify right side
    1,728.55x = 2,248,454.48
  5. Step 5: Solve for x
    x = 2,248,454.48/1,728.55
  6. Step 6: Final answer
    x = 1,300.78

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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.