Home / 3,988.08-5,491.80-3,427.83

Finding the Fourth Proportional to 3,988.08, 5,491.80 and 3,427.83

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Solution

The fourth proportional to 3,988.08, 5,491.80 and 3,427.83 is: 4,720.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.08 : 5,491.80 = 3,427.83 : x
  2. Step 2: Convert to fraction form
    3,988.08/5,491.80 = 3,427.83/x
  3. Step 3: Cross multiply
    3,988.08x = 5,491.80 × 3,427.83
  4. Step 4: Simplify right side
    3,988.08x = 18,824,956.79
  5. Step 5: Solve for x
    x = 18,824,956.79/3,988.08
  6. Step 6: Final answer
    x = 4,720.31

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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.