Home / 3,520.42-5,280.63-1,212.10

Finding the Fourth Proportional to 3,520.42, 5,280.63 and 1,212.10

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Solution

The fourth proportional to 3,520.42, 5,280.63 and 1,212.10 is: 1,818.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.42 : 5,280.63 = 1,212.10 : x
  2. Step 2: Convert to fraction form
    3,520.42/5,280.63 = 1,212.10/x
  3. Step 3: Cross multiply
    3,520.42x = 5,280.63 × 1,212.10
  4. Step 4: Simplify right side
    3,520.42x = 6,400,651.62
  5. Step 5: Solve for x
    x = 6,400,651.62/3,520.42
  6. Step 6: Final answer
    x = 1,818.15

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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.