Home / 2,257.10-3,114.70-1,262.20

Finding the Fourth Proportional to 2,257.10, 3,114.70 and 1,262.20

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Solution

The fourth proportional to 2,257.10, 3,114.70 and 1,262.20 is: 1,741.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.10 : 3,114.70 = 1,262.20 : x
  2. Step 2: Convert to fraction form
    2,257.10/3,114.70 = 1,262.20/x
  3. Step 3: Cross multiply
    2,257.10x = 3,114.70 × 1,262.20
  4. Step 4: Simplify right side
    2,257.10x = 3,931,374.34
  5. Step 5: Solve for x
    x = 3,931,374.34/2,257.10
  6. Step 6: Final answer
    x = 1,741.78

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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.