Home / 2,770.35-4,155.58-921.48

Finding the Fourth Proportional to 2,770.35, 4,155.58 and 921.48

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Solution

The fourth proportional to 2,770.35, 4,155.58 and 921.48 is: 1,382.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.35 : 4,155.58 = 921.48 : x
  2. Step 2: Convert to fraction form
    2,770.35/4,155.58 = 921.48/x
  3. Step 3: Cross multiply
    2,770.35x = 4,155.58 × 921.48
  4. Step 4: Simplify right side
    2,770.35x = 3,829,264.24
  5. Step 5: Solve for x
    x = 3,829,264.24/2,770.35
  6. Step 6: Final answer
    x = 1,382.23

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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.