Home / 6,439.91-9,658.74-2,278.94

Finding the Fourth Proportional to 6,439.91, 9,658.74 and 2,278.94

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Solution

The fourth proportional to 6,439.91, 9,658.74 and 2,278.94 is: 3,418.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.91 : 9,658.74 = 2,278.94 : x
  2. Step 2: Convert to fraction form
    6,439.91/9,658.74 = 2,278.94/x
  3. Step 3: Cross multiply
    6,439.91x = 9,658.74 × 2,278.94
  4. Step 4: Simplify right side
    6,439.91x = 22,011,649.19
  5. Step 5: Solve for x
    x = 22,011,649.19/6,439.91
  6. Step 6: Final answer
    x = 3,418.01

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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.