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Finding the Fourth Proportional to 4,857.61, 6,703.21 and 2,868.79

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Solution

The fourth proportional to 4,857.61, 6,703.21 and 2,868.79 is: 3,958.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,857.61 : 6,703.21 = 2,868.79 : x
  2. Step 2: Convert to fraction form
    4,857.61/6,703.21 = 2,868.79/x
  3. Step 3: Cross multiply
    4,857.61x = 6,703.21 × 2,868.79
  4. Step 4: Simplify right side
    4,857.61x = 19,230,101.82
  5. Step 5: Solve for x
    x = 19,230,101.82/4,857.61
  6. Step 6: Final answer
    x = 3,958.76

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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.