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Finding the Fourth Proportional to 3,979.04, 5,484.02 and 3,520.76

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Solution

The fourth proportional to 3,979.04, 5,484.02 and 3,520.76 is: 4,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.04 : 5,484.02 = 3,520.76 : x
  2. Step 2: Convert to fraction form
    3,979.04/5,484.02 = 3,520.76/x
  3. Step 3: Cross multiply
    3,979.04x = 5,484.02 × 3,520.76
  4. Step 4: Simplify right side
    3,979.04x = 19,307,873.23
  5. Step 5: Solve for x
    x = 19,307,873.23/3,979.04
  6. Step 6: Final answer
    x = 4,852.40

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Double scale
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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.