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Finding the Fourth Proportional to 2,191.53, 3,287.30 and 730.59

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Solution

The fourth proportional to 2,191.53, 3,287.30 and 730.59 is: 1,095.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.53 : 3,287.30 = 730.59 : x
  2. Step 2: Convert to fraction form
    2,191.53/3,287.30 = 730.59/x
  3. Step 3: Cross multiply
    2,191.53x = 3,287.30 × 730.59
  4. Step 4: Simplify right side
    2,191.53x = 2,401,664.85
  5. Step 5: Solve for x
    x = 2,401,664.85/2,191.53
  6. Step 6: Final answer
    x = 1,095.89

Related Problems

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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.