Home / 7,849.10-11,772.30-2,916.20

Finding the Fourth Proportional to 7,849.10, 11,772.30 and 2,916.20

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Solution

The fourth proportional to 7,849.10, 11,772.30 and 2,916.20 is: 4,373.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,849.10 : 11,772.30 = 2,916.20 : x
  2. Step 2: Convert to fraction form
    7,849.10/11,772.30 = 2,916.20/x
  3. Step 3: Cross multiply
    7,849.10x = 11,772.30 × 2,916.20
  4. Step 4: Simplify right side
    7,849.10x = 34,330,381.26
  5. Step 5: Solve for x
    x = 34,330,381.26/7,849.10
  6. Step 6: Final answer
    x = 4,373.80

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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.