Home / 2,287.29-3,156.47-1,239.35

Finding the Fourth Proportional to 2,287.29, 3,156.47 and 1,239.35

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Solution

The fourth proportional to 2,287.29, 3,156.47 and 1,239.35 is: 1,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.29 : 3,156.47 = 1,239.35 : x
  2. Step 2: Convert to fraction form
    2,287.29/3,156.47 = 1,239.35/x
  3. Step 3: Cross multiply
    2,287.29x = 3,156.47 × 1,239.35
  4. Step 4: Simplify right side
    2,287.29x = 3,911,949.12
  5. Step 5: Solve for x
    x = 3,911,949.12/2,287.29
  6. Step 6: Final answer
    x = 1,710.30

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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.