Home / 2,988.90-4,470.14-2,662.22

Finding the Fourth Proportional to 2,988.90, 4,470.14 and 2,662.22

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Solution

The fourth proportional to 2,988.90, 4,470.14 and 2,662.22 is: 3,981.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.90 : 4,470.14 = 2,662.22 : x
  2. Step 2: Convert to fraction form
    2,988.90/4,470.14 = 2,662.22/x
  3. Step 3: Cross multiply
    2,988.90x = 4,470.14 × 2,662.22
  4. Step 4: Simplify right side
    2,988.90x = 11,900,473.82
  5. Step 5: Solve for x
    x = 11,900,473.82/2,988.90
  6. Step 6: Final answer
    x = 3,981.56

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1.5x scale

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.