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Finding the Fourth Proportional to 2,822.58, 4,229.22 and 972.69

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Solution

The fourth proportional to 2,822.58, 4,229.22 and 972.69 is: 1,457.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.58 : 4,229.22 = 972.69 : x
  2. Step 2: Convert to fraction form
    2,822.58/4,229.22 = 972.69/x
  3. Step 3: Cross multiply
    2,822.58x = 4,229.22 × 972.69
  4. Step 4: Simplify right side
    2,822.58x = 4,113,720.00
  5. Step 5: Solve for x
    x = 4,113,720.00/2,822.58
  6. Step 6: Final answer
    x = 1,457.43

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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.