Home / 2,970.22-4,451.88-1,120.15

Finding the Fourth Proportional to 2,970.22, 4,451.88 and 1,120.15

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Solution

The fourth proportional to 2,970.22, 4,451.88 and 1,120.15 is: 1,678.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.22 : 4,451.88 = 1,120.15 : x
  2. Step 2: Convert to fraction form
    2,970.22/4,451.88 = 1,120.15/x
  3. Step 3: Cross multiply
    2,970.22x = 4,451.88 × 1,120.15
  4. Step 4: Simplify right side
    2,970.22x = 4,986,773.38
  5. Step 5: Solve for x
    x = 4,986,773.38/2,970.22
  6. Step 6: Final answer
    x = 1,678.92

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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.