Home / 8,479.32-11,703.90-5,121.60

Finding the Fourth Proportional to 8,479.32, 11,703.90 and 5,121.60

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Solution

The fourth proportional to 8,479.32, 11,703.90 and 5,121.60 is: 7,069.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.32 : 11,703.90 = 5,121.60 : x
  2. Step 2: Convert to fraction form
    8,479.32/11,703.90 = 5,121.60/x
  3. Step 3: Cross multiply
    8,479.32x = 11,703.90 × 5,121.60
  4. Step 4: Simplify right side
    8,479.32x = 59,942,694.24
  5. Step 5: Solve for x
    x = 59,942,694.24/8,479.32
  6. Step 6: Final answer
    x = 7,069.28

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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.