Home / 8,307.12-11,464.92-5,787.60

Finding the Fourth Proportional to 8,307.12, 11,464.92 and 5,787.60

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Solution

The fourth proportional to 8,307.12, 11,464.92 and 5,787.60 is: 7,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,307.12 : 11,464.92 = 5,787.60 : x
  2. Step 2: Convert to fraction form
    8,307.12/11,464.92 = 5,787.60/x
  3. Step 3: Cross multiply
    8,307.12x = 11,464.92 × 5,787.60
  4. Step 4: Simplify right side
    8,307.12x = 66,354,370.99
  5. Step 5: Solve for x
    x = 66,354,370.99/8,307.12
  6. Step 6: Final answer
    x = 7,987.65

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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.