Home / 7,716.16-11,575.32-2,520.72

Finding the Fourth Proportional to 7,716.16, 11,575.32 and 2,520.72

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Solution

The fourth proportional to 7,716.16, 11,575.32 and 2,520.72 is: 3,781.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,716.16 : 11,575.32 = 2,520.72 : x
  2. Step 2: Convert to fraction form
    7,716.16/11,575.32 = 2,520.72/x
  3. Step 3: Cross multiply
    7,716.16x = 11,575.32 × 2,520.72
  4. Step 4: Simplify right side
    7,716.16x = 29,178,140.63
  5. Step 5: Solve for x
    x = 29,178,140.63/7,716.16
  6. Step 6: Final answer
    x = 3,781.43

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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.