Home / 8,919.11-12,308.55-5,337.77

Finding the Fourth Proportional to 8,919.11, 12,308.55 and 5,337.77

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Solution

The fourth proportional to 8,919.11, 12,308.55 and 5,337.77 is: 7,366.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.11 : 12,308.55 = 5,337.77 : x
  2. Step 2: Convert to fraction form
    8,919.11/12,308.55 = 5,337.77/x
  3. Step 3: Cross multiply
    8,919.11x = 12,308.55 × 5,337.77
  4. Step 4: Simplify right side
    8,919.11x = 65,700,147.39
  5. Step 5: Solve for x
    x = 65,700,147.39/8,919.11
  6. Step 6: Final answer
    x = 7,366.23

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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.