Home / 2,310.40-3,187.72-1,565.68

Finding the Fourth Proportional to 2,310.40, 3,187.72 and 1,565.68

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Solution

The fourth proportional to 2,310.40, 3,187.72 and 1,565.68 is: 2,160.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.40 : 3,187.72 = 1,565.68 : x
  2. Step 2: Convert to fraction form
    2,310.40/3,187.72 = 1,565.68/x
  3. Step 3: Cross multiply
    2,310.40x = 3,187.72 × 1,565.68
  4. Step 4: Simplify right side
    2,310.40x = 4,990,949.45
  5. Step 5: Solve for x
    x = 4,990,949.45/2,310.40
  6. Step 6: Final answer
    x = 2,160.21

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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.