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Finding the Fourth Proportional to 3,470.34, 4,790.07 and 1,979.07

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Solution

The fourth proportional to 3,470.34, 4,790.07 and 1,979.07 is: 2,731.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.34 : 4,790.07 = 1,979.07 : x
  2. Step 2: Convert to fraction form
    3,470.34/4,790.07 = 1,979.07/x
  3. Step 3: Cross multiply
    3,470.34x = 4,790.07 × 1,979.07
  4. Step 4: Simplify right side
    3,470.34x = 9,479,883.83
  5. Step 5: Solve for x
    x = 9,479,883.83/3,470.34
  6. Step 6: Final answer
    x = 2,731.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.