Home / 8,716.65-12,027.58-5,131.79

Finding the Fourth Proportional to 8,716.65, 12,027.58 and 5,131.79

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Solution

The fourth proportional to 8,716.65, 12,027.58 and 5,131.79 is: 7,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.65 : 12,027.58 = 5,131.79 : x
  2. Step 2: Convert to fraction form
    8,716.65/12,027.58 = 5,131.79/x
  3. Step 3: Cross multiply
    8,716.65x = 12,027.58 × 5,131.79
  4. Step 4: Simplify right side
    8,716.65x = 61,723,014.77
  5. Step 5: Solve for x
    x = 61,723,014.77/8,716.65
  6. Step 6: Final answer
    x = 7,081.05

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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.