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Finding the Fourth Proportional to 3,060.81, 4,590.54 and 980.73

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Solution

The fourth proportional to 3,060.81, 4,590.54 and 980.73 is: 1,470.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,060.81 : 4,590.54 = 980.73 : x
  2. Step 2: Convert to fraction form
    3,060.81/4,590.54 = 980.73/x
  3. Step 3: Cross multiply
    3,060.81x = 4,590.54 × 980.73
  4. Step 4: Simplify right side
    3,060.81x = 4,502,080.29
  5. Step 5: Solve for x
    x = 4,502,080.29/3,060.81
  6. Step 6: Final answer
    x = 1,470.88

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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.