Home / 7,916.19-11,872.62-2,985.72

Finding the Fourth Proportional to 7,916.19, 11,872.62 and 2,985.72

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Solution

The fourth proportional to 7,916.19, 11,872.62 and 2,985.72 is: 4,477.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.19 : 11,872.62 = 2,985.72 : x
  2. Step 2: Convert to fraction form
    7,916.19/11,872.62 = 2,985.72/x
  3. Step 3: Cross multiply
    7,916.19x = 11,872.62 × 2,985.72
  4. Step 4: Simplify right side
    7,916.19x = 35,448,318.99
  5. Step 5: Solve for x
    x = 35,448,318.99/7,916.19
  6. Step 6: Final answer
    x = 4,477.95

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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.