Home / 2,217.30-3,330.51-2,143.50

Finding the Fourth Proportional to 2,217.30, 3,330.51 and 2,143.50

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Solution

The fourth proportional to 2,217.30, 3,330.51 and 2,143.50 is: 3,219.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.30 : 3,330.51 = 2,143.50 : x
  2. Step 2: Convert to fraction form
    2,217.30/3,330.51 = 2,143.50/x
  3. Step 3: Cross multiply
    2,217.30x = 3,330.51 × 2,143.50
  4. Step 4: Simplify right side
    2,217.30x = 7,138,948.19
  5. Step 5: Solve for x
    x = 7,138,948.19/2,217.30
  6. Step 6: Final answer
    x = 3,219.66

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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.