Home / 2,686.09-4,029.21-738.30

Finding the Fourth Proportional to 2,686.09, 4,029.21 and 738.30

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Solution

The fourth proportional to 2,686.09, 4,029.21 and 738.30 is: 1,107.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.09 : 4,029.21 = 738.30 : x
  2. Step 2: Convert to fraction form
    2,686.09/4,029.21 = 738.30/x
  3. Step 3: Cross multiply
    2,686.09x = 4,029.21 × 738.30
  4. Step 4: Simplify right side
    2,686.09x = 2,974,765.74
  5. Step 5: Solve for x
    x = 2,974,765.74/2,686.09
  6. Step 6: Final answer
    x = 1,107.47

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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.