Home / 2,565.58-3,540.50-1,386.65

Finding the Fourth Proportional to 2,565.58, 3,540.50 and 1,386.65

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Solution

The fourth proportional to 2,565.58, 3,540.50 and 1,386.65 is: 1,913.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.58 : 3,540.50 = 1,386.65 : x
  2. Step 2: Convert to fraction form
    2,565.58/3,540.50 = 1,386.65/x
  3. Step 3: Cross multiply
    2,565.58x = 3,540.50 × 1,386.65
  4. Step 4: Simplify right side
    2,565.58x = 4,909,434.33
  5. Step 5: Solve for x
    x = 4,909,434.33/2,565.58
  6. Step 6: Final answer
    x = 1,913.58

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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.