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Finding the Fourth Proportional to 3,180.01, 4,769.74 and 871.51

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Solution

The fourth proportional to 3,180.01, 4,769.74 and 871.51 is: 1,307.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.01 : 4,769.74 = 871.51 : x
  2. Step 2: Convert to fraction form
    3,180.01/4,769.74 = 871.51/x
  3. Step 3: Cross multiply
    3,180.01x = 4,769.74 × 871.51
  4. Step 4: Simplify right side
    3,180.01x = 4,156,876.11
  5. Step 5: Solve for x
    x = 4,156,876.11/3,180.01
  6. Step 6: Final answer
    x = 1,307.19

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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.