Home / 6,419.61-8,859.13-3,767.06

Finding the Fourth Proportional to 6,419.61, 8,859.13 and 3,767.06

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Solution

The fourth proportional to 6,419.61, 8,859.13 and 3,767.06 is: 5,198.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.61 : 8,859.13 = 3,767.06 : x
  2. Step 2: Convert to fraction form
    6,419.61/8,859.13 = 3,767.06/x
  3. Step 3: Cross multiply
    6,419.61x = 8,859.13 × 3,767.06
  4. Step 4: Simplify right side
    6,419.61x = 33,372,886.99
  5. Step 5: Solve for x
    x = 33,372,886.99/6,419.61
  6. Step 6: Final answer
    x = 5,198.58

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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.