Home / 2,190.84-3,023.75-1,306.70

Finding the Fourth Proportional to 2,190.84, 3,023.75 and 1,306.70

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Solution

The fourth proportional to 2,190.84, 3,023.75 and 1,306.70 is: 1,803.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.84 : 3,023.75 = 1,306.70 : x
  2. Step 2: Convert to fraction form
    2,190.84/3,023.75 = 1,306.70/x
  3. Step 3: Cross multiply
    2,190.84x = 3,023.75 × 1,306.70
  4. Step 4: Simplify right side
    2,190.84x = 3,951,134.13
  5. Step 5: Solve for x
    x = 3,951,134.13/2,190.84
  6. Step 6: Final answer
    x = 1,803.48

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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.