Home / 2,770.19-4,155.74-921.33

Finding the Fourth Proportional to 2,770.19, 4,155.74 and 921.33

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Solution

The fourth proportional to 2,770.19, 4,155.74 and 921.33 is: 1,382.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.19 : 4,155.74 = 921.33 : x
  2. Step 2: Convert to fraction form
    2,770.19/4,155.74 = 921.33/x
  3. Step 3: Cross multiply
    2,770.19x = 4,155.74 × 921.33
  4. Step 4: Simplify right side
    2,770.19x = 3,828,803.33
  5. Step 5: Solve for x
    x = 3,828,803.33/2,770.19
  6. Step 6: Final answer
    x = 1,382.15

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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.