Home / 2,225.40-3,316.99-2,209.20

Finding the Fourth Proportional to 2,225.40, 3,316.99 and 2,209.20

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Solution

The fourth proportional to 2,225.40, 3,316.99 and 2,209.20 is: 3,292.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.40 : 3,316.99 = 2,209.20 : x
  2. Step 2: Convert to fraction form
    2,225.40/3,316.99 = 2,209.20/x
  3. Step 3: Cross multiply
    2,225.40x = 3,316.99 × 2,209.20
  4. Step 4: Simplify right side
    2,225.40x = 7,327,894.31
  5. Step 5: Solve for x
    x = 7,327,894.31/2,225.40
  6. Step 6: Final answer
    x = 3,292.84

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Half scale
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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.