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Finding the Fourth Proportional to 3,154.04, 4,731.05 and 845.54

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Solution

The fourth proportional to 3,154.04, 4,731.05 and 845.54 is: 1,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.04 : 4,731.05 = 845.54 : x
  2. Step 2: Convert to fraction form
    3,154.04/4,731.05 = 845.54/x
  3. Step 3: Cross multiply
    3,154.04x = 4,731.05 × 845.54
  4. Step 4: Simplify right side
    3,154.04x = 4,000,264.13
  5. Step 5: Solve for x
    x = 4,000,264.13/3,154.04
  6. Step 6: Final answer
    x = 1,268.30

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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.