Home / 7,716.32-11,575.71-2,787.18

Finding the Fourth Proportional to 7,716.32, 11,575.71 and 2,787.18

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Solution

The fourth proportional to 7,716.32, 11,575.71 and 2,787.18 is: 4,181.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,716.32 : 11,575.71 = 2,787.18 : x
  2. Step 2: Convert to fraction form
    7,716.32/11,575.71 = 2,787.18/x
  3. Step 3: Cross multiply
    7,716.32x = 11,575.71 × 2,787.18
  4. Step 4: Simplify right side
    7,716.32x = 32,263,587.40
  5. Step 5: Solve for x
    x = 32,263,587.40/7,716.32
  6. Step 6: Final answer
    x = 4,181.21

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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.