Home / 2,565.57-3,540.49-1,386.64

Finding the Fourth Proportional to 2,565.57, 3,540.49 and 1,386.64

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Solution

The fourth proportional to 2,565.57, 3,540.49 and 1,386.64 is: 1,913.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.57 : 3,540.49 = 1,386.64 : x
  2. Step 2: Convert to fraction form
    2,565.57/3,540.49 = 1,386.64/x
  3. Step 3: Cross multiply
    2,565.57x = 3,540.49 × 1,386.64
  4. Step 4: Simplify right side
    2,565.57x = 4,909,385.05
  5. Step 5: Solve for x
    x = 4,909,385.05/2,565.57
  6. Step 6: Final answer
    x = 1,913.57

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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.