Home / 2,565.48-3,846.96-921.78

Finding the Fourth Proportional to 2,565.48, 3,846.96 and 921.78

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Solution

The fourth proportional to 2,565.48, 3,846.96 and 921.78 is: 1,382.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.48 : 3,846.96 = 921.78 : x
  2. Step 2: Convert to fraction form
    2,565.48/3,846.96 = 921.78/x
  3. Step 3: Cross multiply
    2,565.48x = 3,846.96 × 921.78
  4. Step 4: Simplify right side
    2,565.48x = 3,546,050.79
  5. Step 5: Solve for x
    x = 3,546,050.79/2,565.48
  6. Step 6: Final answer
    x = 1,382.22

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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.