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Finding the Fourth Proportional to 7,919.76, 11,870.84 and 4,016.10

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Solution

The fourth proportional to 7,919.76, 11,870.84 and 4,016.10 is: 6,019.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.76 : 11,870.84 = 4,016.10 : x
  2. Step 2: Convert to fraction form
    7,919.76/11,870.84 = 4,016.10/x
  3. Step 3: Cross multiply
    7,919.76x = 11,870.84 × 4,016.10
  4. Step 4: Simplify right side
    7,919.76x = 47,674,480.52
  5. Step 5: Solve for x
    x = 47,674,480.52/7,919.76
  6. Step 6: Final answer
    x = 6,019.69

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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.