Home / 3,480.80-5,221.78-1,140.14

Finding the Fourth Proportional to 3,480.80, 5,221.78 and 1,140.14

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Solution

The fourth proportional to 3,480.80, 5,221.78 and 1,140.14 is: 1,710.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.80 : 5,221.78 = 1,140.14 : x
  2. Step 2: Convert to fraction form
    3,480.80/5,221.78 = 1,140.14/x
  3. Step 3: Cross multiply
    3,480.80x = 5,221.78 × 1,140.14
  4. Step 4: Simplify right side
    3,480.80x = 5,953,570.45
  5. Step 5: Solve for x
    x = 5,953,570.45/3,480.80
  6. Step 6: Final answer
    x = 1,710.41

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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.