Home / 2,220.18-3,331.04-988.46

Finding the Fourth Proportional to 2,220.18, 3,331.04 and 988.46

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Solution

The fourth proportional to 2,220.18, 3,331.04 and 988.46 is: 1,483.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.18 : 3,331.04 = 988.46 : x
  2. Step 2: Convert to fraction form
    2,220.18/3,331.04 = 988.46/x
  3. Step 3: Cross multiply
    2,220.18x = 3,331.04 × 988.46
  4. Step 4: Simplify right side
    2,220.18x = 3,292,578.20
  5. Step 5: Solve for x
    x = 3,292,578.20/2,220.18
  6. Step 6: Final answer
    x = 1,483.02

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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.