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Finding the Fourth Proportional to 2,979.70, 4,472.28 and 2,801.10

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Solution

The fourth proportional to 2,979.70, 4,472.28 and 2,801.10 is: 4,204.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.70 : 4,472.28 = 2,801.10 : x
  2. Step 2: Convert to fraction form
    2,979.70/4,472.28 = 2,801.10/x
  3. Step 3: Cross multiply
    2,979.70x = 4,472.28 × 2,801.10
  4. Step 4: Simplify right side
    2,979.70x = 12,527,303.51
  5. Step 5: Solve for x
    x = 12,527,303.51/2,979.70
  6. Step 6: Final answer
    x = 4,204.22

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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.