Home / 2,190.80-3,023.34-1,306.68

Finding the Fourth Proportional to 2,190.80, 3,023.34 and 1,306.68

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Solution

The fourth proportional to 2,190.80, 3,023.34 and 1,306.68 is: 1,803.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.80 : 3,023.34 = 1,306.68 : x
  2. Step 2: Convert to fraction form
    2,190.80/3,023.34 = 1,306.68/x
  3. Step 3: Cross multiply
    2,190.80x = 3,023.34 × 1,306.68
  4. Step 4: Simplify right side
    2,190.80x = 3,950,537.91
  5. Step 5: Solve for x
    x = 3,950,537.91/2,190.80
  6. Step 6: Final answer
    x = 1,803.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.