Home / 3,154.81-4,726.56-1,921.57

Finding the Fourth Proportional to 3,154.81, 4,726.56 and 1,921.57

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Solution

The fourth proportional to 3,154.81, 4,726.56 and 1,921.57 is: 2,878.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.81 : 4,726.56 = 1,921.57 : x
  2. Step 2: Convert to fraction form
    3,154.81/4,726.56 = 1,921.57/x
  3. Step 3: Cross multiply
    3,154.81x = 4,726.56 × 1,921.57
  4. Step 4: Simplify right side
    3,154.81x = 9,082,415.90
  5. Step 5: Solve for x
    x = 9,082,415.90/3,154.81
  6. Step 6: Final answer
    x = 2,878.91

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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.