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Finding the Fourth Proportional to 8,625.64, 11,907.88 and 5,807.84

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Solution

The fourth proportional to 8,625.64, 11,907.88 and 5,807.84 is: 8,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.64 : 11,907.88 = 5,807.84 : x
  2. Step 2: Convert to fraction form
    8,625.64/11,907.88 = 5,807.84/x
  3. Step 3: Cross multiply
    8,625.64x = 11,907.88 × 5,807.84
  4. Step 4: Simplify right side
    8,625.64x = 69,159,061.78
  5. Step 5: Solve for x
    x = 69,159,061.78/8,625.64
  6. Step 6: Final answer
    x = 8,017.85

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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.