Home / 2,920.11-4,380.77-972.33

Finding the Fourth Proportional to 2,920.11, 4,380.77 and 972.33

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Solution

The fourth proportional to 2,920.11, 4,380.77 and 972.33 is: 1,458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.11 : 4,380.77 = 972.33 : x
  2. Step 2: Convert to fraction form
    2,920.11/4,380.77 = 972.33/x
  3. Step 3: Cross multiply
    2,920.11x = 4,380.77 × 972.33
  4. Step 4: Simplify right side
    2,920.11x = 4,259,554.09
  5. Step 5: Solve for x
    x = 4,259,554.09/2,920.11
  6. Step 6: Final answer
    x = 1,458.70

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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.