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Finding the Fourth Proportional to 3,920.16, 5,873.61 and 1,943.13

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Solution

The fourth proportional to 3,920.16, 5,873.61 and 1,943.13 is: 2,911.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.16 : 5,873.61 = 1,943.13 : x
  2. Step 2: Convert to fraction form
    3,920.16/5,873.61 = 1,943.13/x
  3. Step 3: Cross multiply
    3,920.16x = 5,873.61 × 1,943.13
  4. Step 4: Simplify right side
    3,920.16x = 11,413,187.80
  5. Step 5: Solve for x
    x = 11,413,187.80/3,920.16
  6. Step 6: Final answer
    x = 2,911.41

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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.