Home / 2,219.07-3,328.11-659.10

Finding the Fourth Proportional to 2,219.07, 3,328.11 and 659.10

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Solution

The fourth proportional to 2,219.07, 3,328.11 and 659.10 is: 988.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.07 : 3,328.11 = 659.10 : x
  2. Step 2: Convert to fraction form
    2,219.07/3,328.11 = 659.10/x
  3. Step 3: Cross multiply
    2,219.07x = 3,328.11 × 659.10
  4. Step 4: Simplify right side
    2,219.07x = 2,193,557.30
  5. Step 5: Solve for x
    x = 2,193,557.30/2,219.07
  6. Step 6: Final answer
    x = 988.50

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Double scale
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Similar ratio
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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.