Home / 3,710.49-5,556.90-2,147.20

Finding the Fourth Proportional to 3,710.49, 5,556.90 and 2,147.20

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Solution

The fourth proportional to 3,710.49, 5,556.90 and 2,147.20 is: 3,215.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.49 : 5,556.90 = 2,147.20 : x
  2. Step 2: Convert to fraction form
    3,710.49/5,556.90 = 2,147.20/x
  3. Step 3: Cross multiply
    3,710.49x = 5,556.90 × 2,147.20
  4. Step 4: Simplify right side
    3,710.49x = 11,931,759.10
  5. Step 5: Solve for x
    x = 11,931,759.10/3,710.49
  6. Step 6: Final answer
    x = 3,215.68

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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.