Home / 7,421.12-11,128.22-4,302.02

Finding the Fourth Proportional to 7,421.12, 11,128.22 and 4,302.02

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Solution

The fourth proportional to 7,421.12, 11,128.22 and 4,302.02 is: 6,451.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.12 : 11,128.22 = 4,302.02 : x
  2. Step 2: Convert to fraction form
    7,421.12/11,128.22 = 4,302.02/x
  3. Step 3: Cross multiply
    7,421.12x = 11,128.22 × 4,302.02
  4. Step 4: Simplify right side
    7,421.12x = 47,873,778.80
  5. Step 5: Solve for x
    x = 47,873,778.80/7,421.12
  6. Step 6: Final answer
    x = 6,451.02

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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.