Home / 6,681.45-9,219.74-3,697.21

Finding the Fourth Proportional to 6,681.45, 9,219.74 and 3,697.21

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Solution

The fourth proportional to 6,681.45, 9,219.74 and 3,697.21 is: 5,101.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,681.45 : 9,219.74 = 3,697.21 : x
  2. Step 2: Convert to fraction form
    6,681.45/9,219.74 = 3,697.21/x
  3. Step 3: Cross multiply
    6,681.45x = 9,219.74 × 3,697.21
  4. Step 4: Simplify right side
    6,681.45x = 34,087,314.93
  5. Step 5: Solve for x
    x = 34,087,314.93/6,681.45
  6. Step 6: Final answer
    x = 5,101.78

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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.