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Finding the Fourth Proportional to 3,483.72, 5,225.58 and 1,291.86

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Solution

The fourth proportional to 3,483.72, 5,225.58 and 1,291.86 is: 1,937.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,483.72 : 5,225.58 = 1,291.86 : x
  2. Step 2: Convert to fraction form
    3,483.72/5,225.58 = 1,291.86/x
  3. Step 3: Cross multiply
    3,483.72x = 5,225.58 × 1,291.86
  4. Step 4: Simplify right side
    3,483.72x = 6,750,717.78
  5. Step 5: Solve for x
    x = 6,750,717.78/3,483.72
  6. Step 6: Final answer
    x = 1,937.79

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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.