Home / 9,319.20-12,859.72-5,340.68

Finding the Fourth Proportional to 9,319.20, 12,859.72 and 5,340.68

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Solution

The fourth proportional to 9,319.20, 12,859.72 and 5,340.68 is: 7,369.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.20 : 12,859.72 = 5,340.68 : x
  2. Step 2: Convert to fraction form
    9,319.20/12,859.72 = 5,340.68/x
  3. Step 3: Cross multiply
    9,319.20x = 12,859.72 × 5,340.68
  4. Step 4: Simplify right side
    9,319.20x = 68,679,649.41
  5. Step 5: Solve for x
    x = 68,679,649.41/9,319.20
  6. Step 6: Final answer
    x = 7,369.69

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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.