Home / 3,899.36-5,386.80-3,374.48

Finding the Fourth Proportional to 3,899.36, 5,386.80 and 3,374.48

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Solution

The fourth proportional to 3,899.36, 5,386.80 and 3,374.48 is: 4,661.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.36 : 5,386.80 = 3,374.48 : x
  2. Step 2: Convert to fraction form
    3,899.36/5,386.80 = 3,374.48/x
  3. Step 3: Cross multiply
    3,899.36x = 5,386.80 × 3,374.48
  4. Step 4: Simplify right side
    3,899.36x = 18,177,648.86
  5. Step 5: Solve for x
    x = 18,177,648.86/3,899.36
  6. Step 6: Final answer
    x = 4,661.70

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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.