Home / 2,661.24-3,989.26-1,565.40

Finding the Fourth Proportional to 2,661.24, 3,989.26 and 1,565.40

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Solution

The fourth proportional to 2,661.24, 3,989.26 and 1,565.40 is: 2,346.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661.24 : 3,989.26 = 1,565.40 : x
  2. Step 2: Convert to fraction form
    2,661.24/3,989.26 = 1,565.40/x
  3. Step 3: Cross multiply
    2,661.24x = 3,989.26 × 1,565.40
  4. Step 4: Simplify right side
    2,661.24x = 6,244,787.60
  5. Step 5: Solve for x
    x = 6,244,787.60/2,661.24
  6. Step 6: Final answer
    x = 2,346.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.