Home / 2,831.38-3,907.30-1,589.38

Finding the Fourth Proportional to 2,831.38, 3,907.30 and 1,589.38

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Solution

The fourth proportional to 2,831.38, 3,907.30 and 1,589.38 is: 2,193.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.38 : 3,907.30 = 1,589.38 : x
  2. Step 2: Convert to fraction form
    2,831.38/3,907.30 = 1,589.38/x
  3. Step 3: Cross multiply
    2,831.38x = 3,907.30 × 1,589.38
  4. Step 4: Simplify right side
    2,831.38x = 6,210,184.47
  5. Step 5: Solve for x
    x = 6,210,184.47/2,831.38
  6. Step 6: Final answer
    x = 2,193.34

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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.