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Finding the Fourth Proportional to 3,280.04, 4,920.36 and 940.04

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Solution

The fourth proportional to 3,280.04, 4,920.36 and 940.04 is: 1,410.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.04 : 4,920.36 = 940.04 : x
  2. Step 2: Convert to fraction form
    3,280.04/4,920.36 = 940.04/x
  3. Step 3: Cross multiply
    3,280.04x = 4,920.36 × 940.04
  4. Step 4: Simplify right side
    3,280.04x = 4,625,335.21
  5. Step 5: Solve for x
    x = 4,625,335.21/3,280.04
  6. Step 6: Final answer
    x = 1,410.15

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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.