Home / 3,899.50-5,370.48-3,887.66

Finding the Fourth Proportional to 3,899.50, 5,370.48 and 3,887.66

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Solution

The fourth proportional to 3,899.50, 5,370.48 and 3,887.66 is: 5,354.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.50 : 5,370.48 = 3,887.66 : x
  2. Step 2: Convert to fraction form
    3,899.50/5,370.48 = 3,887.66/x
  3. Step 3: Cross multiply
    3,899.50x = 5,370.48 × 3,887.66
  4. Step 4: Simplify right side
    3,899.50x = 20,878,600.28
  5. Step 5: Solve for x
    x = 20,878,600.28/3,899.50
  6. Step 6: Final answer
    x = 5,354.17

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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.