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Finding the Fourth Proportional to 2,830.57, 4,245.13 and 881.77

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Solution

The fourth proportional to 2,830.57, 4,245.13 and 881.77 is: 1,322.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.57 : 4,245.13 = 881.77 : x
  2. Step 2: Convert to fraction form
    2,830.57/4,245.13 = 881.77/x
  3. Step 3: Cross multiply
    2,830.57x = 4,245.13 × 881.77
  4. Step 4: Simplify right side
    2,830.57x = 3,743,228.28
  5. Step 5: Solve for x
    x = 3,743,228.28/2,830.57
  6. Step 6: Final answer
    x = 1,322.43

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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.