Home / 1,861.10-2,565.51-1,161.26

Finding the Fourth Proportional to 1,861.10, 2,565.51 and 1,161.26

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Solution

The fourth proportional to 1,861.10, 2,565.51 and 1,161.26 is: 1,600.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.10 : 2,565.51 = 1,161.26 : x
  2. Step 2: Convert to fraction form
    1,861.10/2,565.51 = 1,161.26/x
  3. Step 3: Cross multiply
    1,861.10x = 2,565.51 × 1,161.26
  4. Step 4: Simplify right side
    1,861.10x = 2,979,224.14
  5. Step 5: Solve for x
    x = 2,979,224.14/1,861.10
  6. Step 6: Final answer
    x = 1,600.79

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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.