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Finding the Fourth Proportional to 2,073.65, 3,112.88 and 841.95

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Solution

The fourth proportional to 2,073.65, 3,112.88 and 841.95 is: 1,263.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,073.65 : 3,112.88 = 841.95 : x
  2. Step 2: Convert to fraction form
    2,073.65/3,112.88 = 841.95/x
  3. Step 3: Cross multiply
    2,073.65x = 3,112.88 × 841.95
  4. Step 4: Simplify right side
    2,073.65x = 2,620,885.11
  5. Step 5: Solve for x
    x = 2,620,885.11/2,073.65
  6. Step 6: Final answer
    x = 1,263.90

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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.