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Finding the Fourth Proportional to 4,801.40, 6,628.99 and 3,919.30

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Solution

The fourth proportional to 4,801.40, 6,628.99 and 3,919.30 is: 5,411.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,801.40 : 6,628.99 = 3,919.30 : x
  2. Step 2: Convert to fraction form
    4,801.40/6,628.99 = 3,919.30/x
  3. Step 3: Cross multiply
    4,801.40x = 6,628.99 × 3,919.30
  4. Step 4: Simplify right side
    4,801.40x = 25,981,000.51
  5. Step 5: Solve for x
    x = 25,981,000.51/4,801.40
  6. Step 6: Final answer
    x = 5,411.13

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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.