Home / 2,565.61-3,540.53-1,386.68

Finding the Fourth Proportional to 2,565.61, 3,540.53 and 1,386.68

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Solution

The fourth proportional to 2,565.61, 3,540.53 and 1,386.68 is: 1,913.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.61 : 3,540.53 = 1,386.68 : x
  2. Step 2: Convert to fraction form
    2,565.61/3,540.53 = 1,386.68/x
  3. Step 3: Cross multiply
    2,565.61x = 3,540.53 × 1,386.68
  4. Step 4: Simplify right side
    2,565.61x = 4,909,560.10
  5. Step 5: Solve for x
    x = 4,909,560.10/2,565.61
  6. Step 6: Final answer
    x = 1,913.61

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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.