Home / 2,190.20-3,281.64-1,572.96

Finding the Fourth Proportional to 2,190.20, 3,281.64 and 1,572.96

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Solution

The fourth proportional to 2,190.20, 3,281.64 and 1,572.96 is: 2,356.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.20 : 3,281.64 = 1,572.96 : x
  2. Step 2: Convert to fraction form
    2,190.20/3,281.64 = 1,572.96/x
  3. Step 3: Cross multiply
    2,190.20x = 3,281.64 × 1,572.96
  4. Step 4: Simplify right side
    2,190.20x = 5,161,888.45
  5. Step 5: Solve for x
    x = 5,161,888.45/2,190.20
  6. Step 6: Final answer
    x = 2,356.81

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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.