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Finding the Fourth Proportional to 2,955.04, 4,431.56 and 874.52

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Solution

The fourth proportional to 2,955.04, 4,431.56 and 874.52 is: 1,311.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.04 : 4,431.56 = 874.52 : x
  2. Step 2: Convert to fraction form
    2,955.04/4,431.56 = 874.52/x
  3. Step 3: Cross multiply
    2,955.04x = 4,431.56 × 874.52
  4. Step 4: Simplify right side
    2,955.04x = 3,875,487.85
  5. Step 5: Solve for x
    x = 3,875,487.85/2,955.04
  6. Step 6: Final answer
    x = 1,311.48

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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.