Home / 2,565.35-3,845.28-1,085.39

Finding the Fourth Proportional to 2,565.35, 3,845.28 and 1,085.39

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Solution

The fourth proportional to 2,565.35, 3,845.28 and 1,085.39 is: 1,626.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.35 : 3,845.28 = 1,085.39 : x
  2. Step 2: Convert to fraction form
    2,565.35/3,845.28 = 1,085.39/x
  3. Step 3: Cross multiply
    2,565.35x = 3,845.28 × 1,085.39
  4. Step 4: Simplify right side
    2,565.35x = 4,173,628.46
  5. Step 5: Solve for x
    x = 4,173,628.46/2,565.35
  6. Step 6: Final answer
    x = 1,626.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.