Home / 1,591.41-2,396.46-1,388.40

Finding the Fourth Proportional to 1,591.41, 2,396.46 and 1,388.40

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Solution

The fourth proportional to 1,591.41, 2,396.46 and 1,388.40 is: 2,090.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591.41 : 2,396.46 = 1,388.40 : x
  2. Step 2: Convert to fraction form
    1,591.41/2,396.46 = 1,388.40/x
  3. Step 3: Cross multiply
    1,591.41x = 2,396.46 × 1,388.40
  4. Step 4: Simplify right side
    1,591.41x = 3,327,238.12
  5. Step 5: Solve for x
    x = 3,327,238.12/1,591.41
  6. Step 6: Final answer
    x = 2,090.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.