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Finding the Fourth Proportional to 4,870.62, 6,721.54 and 2,881.52

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Solution

The fourth proportional to 4,870.62, 6,721.54 and 2,881.52 is: 3,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,870.62 : 6,721.54 = 2,881.52 : x
  2. Step 2: Convert to fraction form
    4,870.62/6,721.54 = 2,881.52/x
  3. Step 3: Cross multiply
    4,870.62x = 6,721.54 × 2,881.52
  4. Step 4: Simplify right side
    4,870.62x = 19,368,251.94
  5. Step 5: Solve for x
    x = 19,368,251.94/4,870.62
  6. Step 6: Final answer
    x = 3,976.55

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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.