Home / 2,281.17-3,147.42-1,396.65

Finding the Fourth Proportional to 2,281.17, 3,147.42 and 1,396.65

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Solution

The fourth proportional to 2,281.17, 3,147.42 and 1,396.65 is: 1,927.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.17 : 3,147.42 = 1,396.65 : x
  2. Step 2: Convert to fraction form
    2,281.17/3,147.42 = 1,396.65/x
  3. Step 3: Cross multiply
    2,281.17x = 3,147.42 × 1,396.65
  4. Step 4: Simplify right side
    2,281.17x = 4,395,844.14
  5. Step 5: Solve for x
    x = 4,395,844.14/2,281.17
  6. Step 6: Final answer
    x = 1,927.01

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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.