Home / 7,218.60-9,962.11-4,031.90

Finding the Fourth Proportional to 7,218.60, 9,962.11 and 4,031.90

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Solution

The fourth proportional to 7,218.60, 9,962.11 and 4,031.90 is: 5,564.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.60 : 9,962.11 = 4,031.90 : x
  2. Step 2: Convert to fraction form
    7,218.60/9,962.11 = 4,031.90/x
  3. Step 3: Cross multiply
    7,218.60x = 9,962.11 × 4,031.90
  4. Step 4: Simplify right side
    7,218.60x = 40,166,231.31
  5. Step 5: Solve for x
    x = 40,166,231.31/7,218.60
  6. Step 6: Final answer
    x = 5,564.27

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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.