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Finding the Fourth Proportional to 3,763.87, 5,649.28 and 1,916.32

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Solution

The fourth proportional to 3,763.87, 5,649.28 and 1,916.32 is: 2,876.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,763.87 : 5,649.28 = 1,916.32 : x
  2. Step 2: Convert to fraction form
    3,763.87/5,649.28 = 1,916.32/x
  3. Step 3: Cross multiply
    3,763.87x = 5,649.28 × 1,916.32
  4. Step 4: Simplify right side
    3,763.87x = 10,825,828.25
  5. Step 5: Solve for x
    x = 10,825,828.25/3,763.87
  6. Step 6: Final answer
    x = 2,876.25

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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.