Home / 2,090.40-3,136.59-1,397.40

Finding the Fourth Proportional to 2,090.40, 3,136.59 and 1,397.40

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Solution

The fourth proportional to 2,090.40, 3,136.59 and 1,397.40 is: 2,096.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.40 : 3,136.59 = 1,397.40 : x
  2. Step 2: Convert to fraction form
    2,090.40/3,136.59 = 1,397.40/x
  3. Step 3: Cross multiply
    2,090.40x = 3,136.59 × 1,397.40
  4. Step 4: Simplify right side
    2,090.40x = 4,383,070.87
  5. Step 5: Solve for x
    x = 4,383,070.87/2,090.40
  6. Step 6: Final answer
    x = 2,096.76

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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.