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Finding the Fourth Proportional to 6,655.61, 9,184.43 and 3,820.99

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Solution

The fourth proportional to 6,655.61, 9,184.43 and 3,820.99 is: 5,272.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,655.61 : 9,184.43 = 3,820.99 : x
  2. Step 2: Convert to fraction form
    6,655.61/9,184.43 = 3,820.99/x
  3. Step 3: Cross multiply
    6,655.61x = 9,184.43 × 3,820.99
  4. Step 4: Simplify right side
    6,655.61x = 35,093,601.78
  5. Step 5: Solve for x
    x = 35,093,601.78/6,655.61
  6. Step 6: Final answer
    x = 5,272.79

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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.