Home / 5,470.48-7,549.31-3,112.78

Finding the Fourth Proportional to 5,470.48, 7,549.31 and 3,112.78

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Solution

The fourth proportional to 5,470.48, 7,549.31 and 3,112.78 is: 4,295.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,470.48 : 7,549.31 = 3,112.78 : x
  2. Step 2: Convert to fraction form
    5,470.48/7,549.31 = 3,112.78/x
  3. Step 3: Cross multiply
    5,470.48x = 7,549.31 × 3,112.78
  4. Step 4: Simplify right side
    5,470.48x = 23,499,303.44
  5. Step 5: Solve for x
    x = 23,499,303.44/5,470.48
  6. Step 6: Final answer
    x = 4,295.66

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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.