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Finding the Fourth Proportional to 2,090.65, 3,136.20 and 704.18

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Solution

The fourth proportional to 2,090.65, 3,136.20 and 704.18 is: 1,056.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.65 : 3,136.20 = 704.18 : x
  2. Step 2: Convert to fraction form
    2,090.65/3,136.20 = 704.18/x
  3. Step 3: Cross multiply
    2,090.65x = 3,136.20 × 704.18
  4. Step 4: Simplify right side
    2,090.65x = 2,208,449.32
  5. Step 5: Solve for x
    x = 2,208,449.32/2,090.65
  6. Step 6: Final answer
    x = 1,056.35

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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.