Home / 3,311.42-4,966.81-1,120.16

Finding the Fourth Proportional to 3,311.42, 4,966.81 and 1,120.16

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Solution

The fourth proportional to 3,311.42, 4,966.81 and 1,120.16 is: 1,680.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.42 : 4,966.81 = 1,120.16 : x
  2. Step 2: Convert to fraction form
    3,311.42/4,966.81 = 1,120.16/x
  3. Step 3: Cross multiply
    3,311.42x = 4,966.81 × 1,120.16
  4. Step 4: Simplify right side
    3,311.42x = 5,563,631.51
  5. Step 5: Solve for x
    x = 5,563,631.51/3,311.42
  6. Step 6: Final answer
    x = 1,680.14

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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.