Home / 3,620.80-5,429.81-1,541.78

Finding the Fourth Proportional to 3,620.80, 5,429.81 and 1,541.78

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Solution

The fourth proportional to 3,620.80, 5,429.81 and 1,541.78 is: 2,312.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.80 : 5,429.81 = 1,541.78 : x
  2. Step 2: Convert to fraction form
    3,620.80/5,429.81 = 1,541.78/x
  3. Step 3: Cross multiply
    3,620.80x = 5,429.81 × 1,541.78
  4. Step 4: Simplify right side
    3,620.80x = 8,371,595.74
  5. Step 5: Solve for x
    x = 8,371,595.74/3,620.80
  6. Step 6: Final answer
    x = 2,312.08

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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.