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Finding the Fourth Proportional to 2,713.49, 4,070.73 and 864.73

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Solution

The fourth proportional to 2,713.49, 4,070.73 and 864.73 is: 1,297.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,713.49 : 4,070.73 = 864.73 : x
  2. Step 2: Convert to fraction form
    2,713.49/4,070.73 = 864.73/x
  3. Step 3: Cross multiply
    2,713.49x = 4,070.73 × 864.73
  4. Step 4: Simplify right side
    2,713.49x = 3,520,082.35
  5. Step 5: Solve for x
    x = 3,520,082.35/2,713.49
  6. Step 6: Final answer
    x = 1,297.25

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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.