Home / 8,626.15-12,919.79-5,156.11

Finding the Fourth Proportional to 8,626.15, 12,919.79 and 5,156.11

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Solution

The fourth proportional to 8,626.15, 12,919.79 and 5,156.11 is: 7,722.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.15 : 12,919.79 = 5,156.11 : x
  2. Step 2: Convert to fraction form
    8,626.15/12,919.79 = 5,156.11/x
  3. Step 3: Cross multiply
    8,626.15x = 12,919.79 × 5,156.11
  4. Step 4: Simplify right side
    8,626.15x = 66,615,832.64
  5. Step 5: Solve for x
    x = 66,615,832.64/8,626.15
  6. Step 6: Final answer
    x = 7,722.55

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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.