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Finding the Fourth Proportional to 3,479.68, 4,802.16 and 2,064.21

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Solution

The fourth proportional to 3,479.68, 4,802.16 and 2,064.21 is: 2,848.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.68 : 4,802.16 = 2,064.21 : x
  2. Step 2: Convert to fraction form
    3,479.68/4,802.16 = 2,064.21/x
  3. Step 3: Cross multiply
    3,479.68x = 4,802.16 × 2,064.21
  4. Step 4: Simplify right side
    3,479.68x = 9,912,660.69
  5. Step 5: Solve for x
    x = 9,912,660.69/3,479.68
  6. Step 6: Final answer
    x = 2,848.72

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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.