Home / 9,319.38-12,860.63-6,939.99

Finding the Fourth Proportional to 9,319.38, 12,860.63 and 6,939.99

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Solution

The fourth proportional to 9,319.38, 12,860.63 and 6,939.99 is: 9,577.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.38 : 12,860.63 = 6,939.99 : x
  2. Step 2: Convert to fraction form
    9,319.38/12,860.63 = 6,939.99/x
  3. Step 3: Cross multiply
    9,319.38x = 12,860.63 × 6,939.99
  4. Step 4: Simplify right side
    9,319.38x = 89,252,608.89
  5. Step 5: Solve for x
    x = 89,252,608.89/9,319.38
  6. Step 6: Final answer
    x = 9,577.10

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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.