Home / 2,287.09-3,156.19-1,239.15

Finding the Fourth Proportional to 2,287.09, 3,156.19 and 1,239.15

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Solution

The fourth proportional to 2,287.09, 3,156.19 and 1,239.15 is: 1,710.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.09 : 3,156.19 = 1,239.15 : x
  2. Step 2: Convert to fraction form
    2,287.09/3,156.19 = 1,239.15/x
  3. Step 3: Cross multiply
    2,287.09x = 3,156.19 × 1,239.15
  4. Step 4: Simplify right side
    2,287.09x = 3,910,995.40
  5. Step 5: Solve for x
    x = 3,910,995.40/2,287.09
  6. Step 6: Final answer
    x = 1,710.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.