Home / 4,291.20-6,436.56-1,213.12

Finding the Fourth Proportional to 4,291.20, 6,436.56 and 1,213.12

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Solution

The fourth proportional to 4,291.20, 6,436.56 and 1,213.12 is: 1,819.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,291.20 : 6,436.56 = 1,213.12 : x
  2. Step 2: Convert to fraction form
    4,291.20/6,436.56 = 1,213.12/x
  3. Step 3: Cross multiply
    4,291.20x = 6,436.56 × 1,213.12
  4. Step 4: Simplify right side
    4,291.20x = 7,808,319.67
  5. Step 5: Solve for x
    x = 7,808,319.67/4,291.20
  6. Step 6: Final answer
    x = 1,819.61

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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.