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Finding the Fourth Proportional to 3,520.04, 5,280.80 and 1,055.04

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Solution

The fourth proportional to 3,520.04, 5,280.80 and 1,055.04 is: 1,582.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.04 : 5,280.80 = 1,055.04 : x
  2. Step 2: Convert to fraction form
    3,520.04/5,280.80 = 1,055.04/x
  3. Step 3: Cross multiply
    3,520.04x = 5,280.80 × 1,055.04
  4. Step 4: Simplify right side
    3,520.04x = 5,571,455.23
  5. Step 5: Solve for x
    x = 5,571,455.23/3,520.04
  6. Step 6: Final answer
    x = 1,582.78

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Double scale
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Similar ratio
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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.