Home / 4,278.32-6,416.45-2,891.28

Finding the Fourth Proportional to 4,278.32, 6,416.45 and 2,891.28

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Solution

The fourth proportional to 4,278.32, 6,416.45 and 2,891.28 is: 4,336.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.32 : 6,416.45 = 2,891.28 : x
  2. Step 2: Convert to fraction form
    4,278.32/6,416.45 = 2,891.28/x
  3. Step 3: Cross multiply
    4,278.32x = 6,416.45 × 2,891.28
  4. Step 4: Simplify right side
    4,278.32x = 18,551,777.18
  5. Step 5: Solve for x
    x = 18,551,777.18/4,278.32
  6. Step 6: Final answer
    x = 4,336.23

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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.