Home / 2,086.40-3,130.29-699.87

Finding the Fourth Proportional to 2,086.40, 3,130.29 and 699.87

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Solution

The fourth proportional to 2,086.40, 3,130.29 and 699.87 is: 1,050.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086.40 : 3,130.29 = 699.87 : x
  2. Step 2: Convert to fraction form
    2,086.40/3,130.29 = 699.87/x
  3. Step 3: Cross multiply
    2,086.40x = 3,130.29 × 699.87
  4. Step 4: Simplify right side
    2,086.40x = 2,190,796.06
  5. Step 5: Solve for x
    x = 2,190,796.06/2,086.40
  6. Step 6: Final answer
    x = 1,050.04

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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.