Home / 8,470.80-11,690.60-4,694.28

Finding the Fourth Proportional to 8,470.80, 11,690.60 and 4,694.28

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Solution

The fourth proportional to 8,470.80, 11,690.60 and 4,694.28 is: 6,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.80 : 11,690.60 = 4,694.28 : x
  2. Step 2: Convert to fraction form
    8,470.80/11,690.60 = 4,694.28/x
  3. Step 3: Cross multiply
    8,470.80x = 11,690.60 × 4,694.28
  4. Step 4: Simplify right side
    8,470.80x = 54,878,949.77
  5. Step 5: Solve for x
    x = 54,878,949.77/8,470.80
  6. Step 6: Final answer
    x = 6,478.60

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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.