Home / 2,419.60-3,621.30-2,225.20

Finding the Fourth Proportional to 2,419.60, 3,621.30 and 2,225.20

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Solution

The fourth proportional to 2,419.60, 3,621.30 and 2,225.20 is: 3,330.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.60 : 3,621.30 = 2,225.20 : x
  2. Step 2: Convert to fraction form
    2,419.60/3,621.30 = 2,225.20/x
  3. Step 3: Cross multiply
    2,419.60x = 3,621.30 × 2,225.20
  4. Step 4: Simplify right side
    2,419.60x = 8,058,116.76
  5. Step 5: Solve for x
    x = 8,058,116.76/2,419.60
  6. Step 6: Final answer
    x = 3,330.35

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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.