Home / 3,140.37-4,710.69-1,291.82

Finding the Fourth Proportional to 3,140.37, 4,710.69 and 1,291.82

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Solution

The fourth proportional to 3,140.37, 4,710.69 and 1,291.82 is: 1,937.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.37 : 4,710.69 = 1,291.82 : x
  2. Step 2: Convert to fraction form
    3,140.37/4,710.69 = 1,291.82/x
  3. Step 3: Cross multiply
    3,140.37x = 4,710.69 × 1,291.82
  4. Step 4: Simplify right side
    3,140.37x = 6,085,340.00
  5. Step 5: Solve for x
    x = 6,085,340.00/3,140.37
  6. Step 6: Final answer
    x = 1,937.78

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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.