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Finding the Fourth Proportional to 9,691.11, 13,374.72 and 5,916.51

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Solution

The fourth proportional to 9,691.11, 13,374.72 and 5,916.51 is: 8,165.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,691.11 : 13,374.72 = 5,916.51 : x
  2. Step 2: Convert to fraction form
    9,691.11/13,374.72 = 5,916.51/x
  3. Step 3: Cross multiply
    9,691.11x = 13,374.72 × 5,916.51
  4. Step 4: Simplify right side
    9,691.11x = 79,131,664.63
  5. Step 5: Solve for x
    x = 79,131,664.63/9,691.11
  6. Step 6: Final answer
    x = 8,165.39

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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.