Home / 3,988.78-5,495.60-2,924.72

Finding the Fourth Proportional to 3,988.78, 5,495.60 and 2,924.72

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Solution

The fourth proportional to 3,988.78, 5,495.60 and 2,924.72 is: 4,029.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.78 : 5,495.60 = 2,924.72 : x
  2. Step 2: Convert to fraction form
    3,988.78/5,495.60 = 2,924.72/x
  3. Step 3: Cross multiply
    3,988.78x = 5,495.60 × 2,924.72
  4. Step 4: Simplify right side
    3,988.78x = 16,073,091.23
  5. Step 5: Solve for x
    x = 16,073,091.23/3,988.78
  6. Step 6: Final answer
    x = 4,029.58

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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.