Home / 3,140.10-4,709.36-1,291.73

Finding the Fourth Proportional to 3,140.10, 4,709.36 and 1,291.73

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Solution

The fourth proportional to 3,140.10, 4,709.36 and 1,291.73 is: 1,937.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.10 : 4,709.36 = 1,291.73 : x
  2. Step 2: Convert to fraction form
    3,140.10/4,709.36 = 1,291.73/x
  3. Step 3: Cross multiply
    3,140.10x = 4,709.36 × 1,291.73
  4. Step 4: Simplify right side
    3,140.10x = 6,083,221.59
  5. Step 5: Solve for x
    x = 6,083,221.59/3,140.10
  6. Step 6: Final answer
    x = 1,937.27

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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.