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Finding the Fourth Proportional to 4,888.53, 6,747.21 and 3,119.76

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Solution

The fourth proportional to 4,888.53, 6,747.21 and 3,119.76 is: 4,305.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,888.53 : 6,747.21 = 3,119.76 : x
  2. Step 2: Convert to fraction form
    4,888.53/6,747.21 = 3,119.76/x
  3. Step 3: Cross multiply
    4,888.53x = 6,747.21 × 3,119.76
  4. Step 4: Simplify right side
    4,888.53x = 21,049,675.87
  5. Step 5: Solve for x
    x = 21,049,675.87/4,888.53
  6. Step 6: Final answer
    x = 4,305.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.