Home / 2,124.20-3,186.30-969.95

Finding the Fourth Proportional to 2,124.20, 3,186.30 and 969.95

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Solution

The fourth proportional to 2,124.20, 3,186.30 and 969.95 is: 1,454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.20 : 3,186.30 = 969.95 : x
  2. Step 2: Convert to fraction form
    2,124.20/3,186.30 = 969.95/x
  3. Step 3: Cross multiply
    2,124.20x = 3,186.30 × 969.95
  4. Step 4: Simplify right side
    2,124.20x = 3,090,551.69
  5. Step 5: Solve for x
    x = 3,090,551.69/2,124.20
  6. Step 6: Final answer
    x = 1,454.93

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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.