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Finding the Fourth Proportional to 4,479.36, 6,719.19 and 1,192.47

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Solution

The fourth proportional to 4,479.36, 6,719.19 and 1,192.47 is: 1,788.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.36 : 6,719.19 = 1,192.47 : x
  2. Step 2: Convert to fraction form
    4,479.36/6,719.19 = 1,192.47/x
  3. Step 3: Cross multiply
    4,479.36x = 6,719.19 × 1,192.47
  4. Step 4: Simplify right side
    4,479.36x = 8,012,432.50
  5. Step 5: Solve for x
    x = 8,012,432.50/4,479.36
  6. Step 6: Final answer
    x = 1,788.74

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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.