Home / 8,520.48-12,780.74-3,842.70

Finding the Fourth Proportional to 8,520.48, 12,780.74 and 3,842.70

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Solution

The fourth proportional to 8,520.48, 12,780.74 and 3,842.70 is: 5,764.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.48 : 12,780.74 = 3,842.70 : x
  2. Step 2: Convert to fraction form
    8,520.48/12,780.74 = 3,842.70/x
  3. Step 3: Cross multiply
    8,520.48x = 12,780.74 × 3,842.70
  4. Step 4: Simplify right side
    8,520.48x = 49,112,530.38
  5. Step 5: Solve for x
    x = 49,112,530.38/8,520.48
  6. Step 6: Final answer
    x = 5,764.06

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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.