Home / 5,357.69-7,392.89-2,999.78

Finding the Fourth Proportional to 5,357.69, 7,392.89 and 2,999.78

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Solution

The fourth proportional to 5,357.69, 7,392.89 and 2,999.78 is: 4,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,357.69 : 7,392.89 = 2,999.78 : x
  2. Step 2: Convert to fraction form
    5,357.69/7,392.89 = 2,999.78/x
  3. Step 3: Cross multiply
    5,357.69x = 7,392.89 × 2,999.78
  4. Step 4: Simplify right side
    5,357.69x = 22,177,014.10
  5. Step 5: Solve for x
    x = 22,177,014.10/5,357.69
  6. Step 6: Final answer
    x = 4,139.29

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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.