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Finding the Fourth Proportional to 2,808.61, 3,880.11 and 2,393.29

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Solution

The fourth proportional to 2,808.61, 3,880.11 and 2,393.29 is: 3,306.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.61 : 3,880.11 = 2,393.29 : x
  2. Step 2: Convert to fraction form
    2,808.61/3,880.11 = 2,393.29/x
  3. Step 3: Cross multiply
    2,808.61x = 3,880.11 × 2,393.29
  4. Step 4: Simplify right side
    2,808.61x = 9,286,228.46
  5. Step 5: Solve for x
    x = 9,286,228.46/2,808.61
  6. Step 6: Final answer
    x = 3,306.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.