Home / 2,211.81-3,313.81-1,169.51

Finding the Fourth Proportional to 2,211.81, 3,313.81 and 1,169.51

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Solution

The fourth proportional to 2,211.81, 3,313.81 and 1,169.51 is: 1,752.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.81 : 3,313.81 = 1,169.51 : x
  2. Step 2: Convert to fraction form
    2,211.81/3,313.81 = 1,169.51/x
  3. Step 3: Cross multiply
    2,211.81x = 3,313.81 × 1,169.51
  4. Step 4: Simplify right side
    2,211.81x = 3,875,518.83
  5. Step 5: Solve for x
    x = 3,875,518.83/2,211.81
  6. Step 6: Final answer
    x = 1,752.20

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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.