Home / 1,378.08-2,057.13-1,144.80

Finding the Fourth Proportional to 1,378.08, 2,057.13 and 1,144.80

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Solution

The fourth proportional to 1,378.08, 2,057.13 and 1,144.80 is: 1,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.08 : 2,057.13 = 1,144.80 : x
  2. Step 2: Convert to fraction form
    1,378.08/2,057.13 = 1,144.80/x
  3. Step 3: Cross multiply
    1,378.08x = 2,057.13 × 1,144.80
  4. Step 4: Simplify right side
    1,378.08x = 2,355,002.42
  5. Step 5: Solve for x
    x = 2,355,002.42/1,378.08
  6. Step 6: Final answer
    x = 1,708.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.