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Finding the Fourth Proportional to 3,763.77, 5,649.12 and 1,916.21

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Solution

The fourth proportional to 3,763.77, 5,649.12 and 1,916.21 is: 2,876.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,763.77 : 5,649.12 = 1,916.21 : x
  2. Step 2: Convert to fraction form
    3,763.77/5,649.12 = 1,916.21/x
  3. Step 3: Cross multiply
    3,763.77x = 5,649.12 × 1,916.21
  4. Step 4: Simplify right side
    3,763.77x = 10,824,890.65
  5. Step 5: Solve for x
    x = 10,824,890.65/3,763.77
  6. Step 6: Final answer
    x = 2,876.08

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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.