Home / 1,331.27-1,983.53-1,256.75

Finding the Fourth Proportional to 1,331.27, 1,983.53 and 1,256.75

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Solution

The fourth proportional to 1,331.27, 1,983.53 and 1,256.75 is: 1,872.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.27 : 1,983.53 = 1,256.75 : x
  2. Step 2: Convert to fraction form
    1,331.27/1,983.53 = 1,256.75/x
  3. Step 3: Cross multiply
    1,331.27x = 1,983.53 × 1,256.75
  4. Step 4: Simplify right side
    1,331.27x = 2,492,795.04
  5. Step 5: Solve for x
    x = 2,492,795.04/1,331.27
  6. Step 6: Final answer
    x = 1,872.49

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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.