Home / 8,501.12-12,751.56-2,657.76

Finding the Fourth Proportional to 8,501.12, 12,751.56 and 2,657.76

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Solution

The fourth proportional to 8,501.12, 12,751.56 and 2,657.76 is: 3,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,501.12 : 12,751.56 = 2,657.76 : x
  2. Step 2: Convert to fraction form
    8,501.12/12,751.56 = 2,657.76/x
  3. Step 3: Cross multiply
    8,501.12x = 12,751.56 × 2,657.76
  4. Step 4: Simplify right side
    8,501.12x = 33,890,586.11
  5. Step 5: Solve for x
    x = 33,890,586.11/8,501.12
  6. Step 6: Final answer
    x = 3,986.60

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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.