Home / 1,944.61-2,685.45-1,385.10

Finding the Fourth Proportional to 1,944.61, 2,685.45 and 1,385.10

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Solution

The fourth proportional to 1,944.61, 2,685.45 and 1,385.10 is: 1,912.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.61 : 2,685.45 = 1,385.10 : x
  2. Step 2: Convert to fraction form
    1,944.61/2,685.45 = 1,385.10/x
  3. Step 3: Cross multiply
    1,944.61x = 2,685.45 × 1,385.10
  4. Step 4: Simplify right side
    1,944.61x = 3,719,621.99
  5. Step 5: Solve for x
    x = 3,719,621.99/1,944.61
  6. Step 6: Final answer
    x = 1,912.79

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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.