Home / 7,849.98-11,768.40-5,378.76

Finding the Fourth Proportional to 7,849.98, 11,768.40 and 5,378.76

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Solution

The fourth proportional to 7,849.98, 11,768.40 and 5,378.76 is: 8,063.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,849.98 : 11,768.40 = 5,378.76 : x
  2. Step 2: Convert to fraction form
    7,849.98/11,768.40 = 5,378.76/x
  3. Step 3: Cross multiply
    7,849.98x = 11,768.40 × 5,378.76
  4. Step 4: Simplify right side
    7,849.98x = 63,299,399.18
  5. Step 5: Solve for x
    x = 63,299,399.18/7,849.98
  6. Step 6: Final answer
    x = 8,063.64

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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.