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Finding the Fourth Proportional to 3,162.16, 4,743.06 and 971.02

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Solution

The fourth proportional to 3,162.16, 4,743.06 and 971.02 is: 1,456.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,162.16 : 4,743.06 = 971.02 : x
  2. Step 2: Convert to fraction form
    3,162.16/4,743.06 = 971.02/x
  3. Step 3: Cross multiply
    3,162.16x = 4,743.06 × 971.02
  4. Step 4: Simplify right side
    3,162.16x = 4,605,606.12
  5. Step 5: Solve for x
    x = 4,605,606.12/3,162.16
  6. Step 6: Final answer
    x = 1,456.47

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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.