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Finding the Fourth Proportional to 9,876.95, 14,815.43 and 3,956.51

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Solution

The fourth proportional to 9,876.95, 14,815.43 and 3,956.51 is: 5,934.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,876.95 : 14,815.43 = 3,956.51 : x
  2. Step 2: Convert to fraction form
    9,876.95/14,815.43 = 3,956.51/x
  3. Step 3: Cross multiply
    9,876.95x = 14,815.43 × 3,956.51
  4. Step 4: Simplify right side
    9,876.95x = 58,617,303.09
  5. Step 5: Solve for x
    x = 58,617,303.09/9,876.95
  6. Step 6: Final answer
    x = 5,934.76

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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.