Home / 7,943.70-11,916.34-2,748.90

Finding the Fourth Proportional to 7,943.70, 11,916.34 and 2,748.90

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Solution

The fourth proportional to 7,943.70, 11,916.34 and 2,748.90 is: 4,123.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.70 : 11,916.34 = 2,748.90 : x
  2. Step 2: Convert to fraction form
    7,943.70/11,916.34 = 2,748.90/x
  3. Step 3: Cross multiply
    7,943.70x = 11,916.34 × 2,748.90
  4. Step 4: Simplify right side
    7,943.70x = 32,756,827.03
  5. Step 5: Solve for x
    x = 32,756,827.03/7,943.70
  6. Step 6: Final answer
    x = 4,123.62

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1.5x scale

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.