Home / 2,565.47-3,540.33-1,386.53

Finding the Fourth Proportional to 2,565.47, 3,540.33 and 1,386.53

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Solution

The fourth proportional to 2,565.47, 3,540.33 and 1,386.53 is: 1,913.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.47 : 3,540.33 = 1,386.53 : x
  2. Step 2: Convert to fraction form
    2,565.47/3,540.33 = 1,386.53/x
  3. Step 3: Cross multiply
    2,565.47x = 3,540.33 × 1,386.53
  4. Step 4: Simplify right side
    2,565.47x = 4,908,756.05
  5. Step 5: Solve for x
    x = 4,908,756.05/2,565.47
  6. Step 6: Final answer
    x = 1,913.40

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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.