Home / 1,512.19-2,082.05-1,373.78

Finding the Fourth Proportional to 1,512.19, 2,082.05 and 1,373.78

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Solution

The fourth proportional to 1,512.19, 2,082.05 and 1,373.78 is: 1,891.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.19 : 2,082.05 = 1,373.78 : x
  2. Step 2: Convert to fraction form
    1,512.19/2,082.05 = 1,373.78/x
  3. Step 3: Cross multiply
    1,512.19x = 2,082.05 × 1,373.78
  4. Step 4: Simplify right side
    1,512.19x = 2,860,261.37
  5. Step 5: Solve for x
    x = 2,860,261.37/1,512.19
  6. Step 6: Final answer
    x = 1,891.47

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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.