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Finding the Fourth Proportional to 5,655.12, 7,799.88 and 3,788.88

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Solution

The fourth proportional to 5,655.12, 7,799.88 and 3,788.88 is: 5,225.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,655.12 : 7,799.88 = 3,788.88 : x
  2. Step 2: Convert to fraction form
    5,655.12/7,799.88 = 3,788.88/x
  3. Step 3: Cross multiply
    5,655.12x = 7,799.88 × 3,788.88
  4. Step 4: Simplify right side
    5,655.12x = 29,552,809.33
  5. Step 5: Solve for x
    x = 29,552,809.33/5,655.12
  6. Step 6: Final answer
    x = 5,225.85

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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.