Home / 4,988.78-6,883.35-2,999.42

Finding the Fourth Proportional to 4,988.78, 6,883.35 and 2,999.42

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Solution

The fourth proportional to 4,988.78, 6,883.35 and 2,999.42 is: 4,138.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.78 : 6,883.35 = 2,999.42 : x
  2. Step 2: Convert to fraction form
    4,988.78/6,883.35 = 2,999.42/x
  3. Step 3: Cross multiply
    4,988.78x = 6,883.35 × 2,999.42
  4. Step 4: Simplify right side
    4,988.78x = 20,646,057.66
  5. Step 5: Solve for x
    x = 20,646,057.66/4,988.78
  6. Step 6: Final answer
    x = 4,138.50

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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.