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Finding the Fourth Proportional to 4,687.76, 6,468.98 and 2,799.80

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Solution

The fourth proportional to 4,687.76, 6,468.98 and 2,799.80 is: 3,863.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.76 : 6,468.98 = 2,799.80 : x
  2. Step 2: Convert to fraction form
    4,687.76/6,468.98 = 2,799.80/x
  3. Step 3: Cross multiply
    4,687.76x = 6,468.98 × 2,799.80
  4. Step 4: Simplify right side
    4,687.76x = 18,111,803.86
  5. Step 5: Solve for x
    x = 18,111,803.86/4,687.76
  6. Step 6: Final answer
    x = 3,863.64

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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.