Home / 9,319.05-12,868.07-6,189.21

Finding the Fourth Proportional to 9,319.05, 12,868.07 and 6,189.21

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Solution

The fourth proportional to 9,319.05, 12,868.07 and 6,189.21 is: 8,546.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.05 : 12,868.07 = 6,189.21 : x
  2. Step 2: Convert to fraction form
    9,319.05/12,868.07 = 6,189.21/x
  3. Step 3: Cross multiply
    9,319.05x = 12,868.07 × 6,189.21
  4. Step 4: Simplify right side
    9,319.05x = 79,643,156.58
  5. Step 5: Solve for x
    x = 79,643,156.58/9,319.05
  6. Step 6: Final answer
    x = 8,546.27

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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.