Home / 1,861.12-2,565.35-1,263.43

Finding the Fourth Proportional to 1,861.12, 2,565.35 and 1,263.43

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Solution

The fourth proportional to 1,861.12, 2,565.35 and 1,263.43 is: 1,741.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.12 : 2,565.35 = 1,263.43 : x
  2. Step 2: Convert to fraction form
    1,861.12/2,565.35 = 1,263.43/x
  3. Step 3: Cross multiply
    1,861.12x = 2,565.35 × 1,263.43
  4. Step 4: Simplify right side
    1,861.12x = 3,241,121.01
  5. Step 5: Solve for x
    x = 3,241,121.01/1,861.12
  6. Step 6: Final answer
    x = 1,741.49

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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.