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Finding the Fourth Proportional to 6,868.83, 9,479.12 and 4,214.91

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Solution

The fourth proportional to 6,868.83, 9,479.12 and 4,214.91 is: 5,816.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,868.83 : 9,479.12 = 4,214.91 : x
  2. Step 2: Convert to fraction form
    6,868.83/9,479.12 = 4,214.91/x
  3. Step 3: Cross multiply
    6,868.83x = 9,479.12 × 4,214.91
  4. Step 4: Simplify right side
    6,868.83x = 39,953,616.60
  5. Step 5: Solve for x
    x = 39,953,616.60/6,868.83
  6. Step 6: Final answer
    x = 5,816.66

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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.