Home / 2,189.41-3,281.28-890.17

Finding the Fourth Proportional to 2,189.41, 3,281.28 and 890.17

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Solution

The fourth proportional to 2,189.41, 3,281.28 and 890.17 is: 1,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.41 : 3,281.28 = 890.17 : x
  2. Step 2: Convert to fraction form
    2,189.41/3,281.28 = 890.17/x
  3. Step 3: Cross multiply
    2,189.41x = 3,281.28 × 890.17
  4. Step 4: Simplify right side
    2,189.41x = 2,920,897.02
  5. Step 5: Solve for x
    x = 2,920,897.02/2,189.41
  6. Step 6: Final answer
    x = 1,334.10

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Double scale
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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.