Home / 9,390.90-12,960.04-5,199.14

Finding the Fourth Proportional to 9,390.90, 12,960.04 and 5,199.14

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Solution

The fourth proportional to 9,390.90, 12,960.04 and 5,199.14 is: 7,175.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,390.90 : 12,960.04 = 5,199.14 : x
  2. Step 2: Convert to fraction form
    9,390.90/12,960.04 = 5,199.14/x
  3. Step 3: Cross multiply
    9,390.90x = 12,960.04 × 5,199.14
  4. Step 4: Simplify right side
    9,390.90x = 67,381,062.37
  5. Step 5: Solve for x
    x = 67,381,062.37/9,390.90
  6. Step 6: Final answer
    x = 7,175.14

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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.