Home / 2,565.78-3,543.31-1,771.15

Finding the Fourth Proportional to 2,565.78, 3,543.31 and 1,771.15

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Solution

The fourth proportional to 2,565.78, 3,543.31 and 1,771.15 is: 2,445.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.78 : 3,543.31 = 1,771.15 : x
  2. Step 2: Convert to fraction form
    2,565.78/3,543.31 = 1,771.15/x
  3. Step 3: Cross multiply
    2,565.78x = 3,543.31 × 1,771.15
  4. Step 4: Simplify right side
    2,565.78x = 6,275,733.51
  5. Step 5: Solve for x
    x = 6,275,733.51/2,565.78
  6. Step 6: Final answer
    x = 2,445.94

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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.