Home / 8,421.11-12,615.25-5,126.03

Finding the Fourth Proportional to 8,421.11, 12,615.25 and 5,126.03

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Solution

The fourth proportional to 8,421.11, 12,615.25 and 5,126.03 is: 7,679.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.11 : 12,615.25 = 5,126.03 : x
  2. Step 2: Convert to fraction form
    8,421.11/12,615.25 = 5,126.03/x
  3. Step 3: Cross multiply
    8,421.11x = 12,615.25 × 5,126.03
  4. Step 4: Simplify right side
    8,421.11x = 64,666,086.88
  5. Step 5: Solve for x
    x = 64,666,086.88/8,421.11
  6. Step 6: Final answer
    x = 7,679.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.