Home / 2,257.08-3,115.72-1,373.20

Finding the Fourth Proportional to 2,257.08, 3,115.72 and 1,373.20

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Solution

The fourth proportional to 2,257.08, 3,115.72 and 1,373.20 is: 1,895.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.08 : 3,115.72 = 1,373.20 : x
  2. Step 2: Convert to fraction form
    2,257.08/3,115.72 = 1,373.20/x
  3. Step 3: Cross multiply
    2,257.08x = 3,115.72 × 1,373.20
  4. Step 4: Simplify right side
    2,257.08x = 4,278,506.70
  5. Step 5: Solve for x
    x = 4,278,506.70/2,257.08
  6. Step 6: Final answer
    x = 1,895.59

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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.