Home / 8,319.36-12,479.63-2,619.83

Finding the Fourth Proportional to 8,319.36, 12,479.63 and 2,619.83

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Solution

The fourth proportional to 8,319.36, 12,479.63 and 2,619.83 is: 3,929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.36 : 12,479.63 = 2,619.83 : x
  2. Step 2: Convert to fraction form
    8,319.36/12,479.63 = 2,619.83/x
  3. Step 3: Cross multiply
    8,319.36x = 12,479.63 × 2,619.83
  4. Step 4: Simplify right side
    8,319.36x = 32,694,509.06
  5. Step 5: Solve for x
    x = 32,694,509.06/8,319.36
  6. Step 6: Final answer
    x = 3,929.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.