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Finding the Fourth Proportional to 2,090.04, 3,135.07 and 858.03

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Solution

The fourth proportional to 2,090.04, 3,135.07 and 858.03 is: 1,287.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.04 : 3,135.07 = 858.03 : x
  2. Step 2: Convert to fraction form
    2,090.04/3,135.07 = 858.03/x
  3. Step 3: Cross multiply
    2,090.04x = 3,135.07 × 858.03
  4. Step 4: Simplify right side
    2,090.04x = 2,689,990.65
  5. Step 5: Solve for x
    x = 2,689,990.65/2,090.04
  6. Step 6: Final answer
    x = 1,287.05

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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.