Home / 3,626.76-5,440.16-1,318.20

Finding the Fourth Proportional to 3,626.76, 5,440.16 and 1,318.20

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Solution

The fourth proportional to 3,626.76, 5,440.16 and 1,318.20 is: 1,977.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,626.76 : 5,440.16 = 1,318.20 : x
  2. Step 2: Convert to fraction form
    3,626.76/5,440.16 = 1,318.20/x
  3. Step 3: Cross multiply
    3,626.76x = 5,440.16 × 1,318.20
  4. Step 4: Simplify right side
    3,626.76x = 7,171,218.91
  5. Step 5: Solve for x
    x = 7,171,218.91/3,626.76
  6. Step 6: Final answer
    x = 1,977.31

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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.