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Finding the Fourth Proportional to 1,885.85, 2,830.13 and 1,065.72

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Solution

The fourth proportional to 1,885.85, 2,830.13 and 1,065.72 is: 1,599.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.85 : 2,830.13 = 1,065.72 : x
  2. Step 2: Convert to fraction form
    1,885.85/2,830.13 = 1,065.72/x
  3. Step 3: Cross multiply
    1,885.85x = 2,830.13 × 1,065.72
  4. Step 4: Simplify right side
    1,885.85x = 3,016,135.42
  5. Step 5: Solve for x
    x = 3,016,135.42/1,885.85
  6. Step 6: Final answer
    x = 1,599.35

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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.