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Finding the Fourth Proportional to 3,478.99, 5,220.17 and 1,530.94

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Solution

The fourth proportional to 3,478.99, 5,220.17 and 1,530.94 is: 2,297.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.99 : 5,220.17 = 1,530.94 : x
  2. Step 2: Convert to fraction form
    3,478.99/5,220.17 = 1,530.94/x
  3. Step 3: Cross multiply
    3,478.99x = 5,220.17 × 1,530.94
  4. Step 4: Simplify right side
    3,478.99x = 7,991,767.06
  5. Step 5: Solve for x
    x = 7,991,767.06/3,478.99
  6. Step 6: Final answer
    x = 2,297.15

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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.