Home / 2,281.47-3,147.69-1,396.35

Finding the Fourth Proportional to 2,281.47, 3,147.69 and 1,396.35

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Solution

The fourth proportional to 2,281.47, 3,147.69 and 1,396.35 is: 1,926.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.47 : 3,147.69 = 1,396.35 : x
  2. Step 2: Convert to fraction form
    2,281.47/3,147.69 = 1,396.35/x
  3. Step 3: Cross multiply
    2,281.47x = 3,147.69 × 1,396.35
  4. Step 4: Simplify right side
    2,281.47x = 4,395,276.93
  5. Step 5: Solve for x
    x = 4,395,276.93/2,281.47
  6. Step 6: Final answer
    x = 1,926.51

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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.