Home / 2,831.87-3,907.00-1,768.91

Finding the Fourth Proportional to 2,831.87, 3,907.00 and 1,768.91

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Solution

The fourth proportional to 2,831.87, 3,907.00 and 1,768.91 is: 2,440.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.87 : 3,907.00 = 1,768.91 : x
  2. Step 2: Convert to fraction form
    2,831.87/3,907.00 = 1,768.91/x
  3. Step 3: Cross multiply
    2,831.87x = 3,907.00 × 1,768.91
  4. Step 4: Simplify right side
    2,831.87x = 6,911,117.62
  5. Step 5: Solve for x
    x = 6,911,117.62/2,831.87
  6. Step 6: Final answer
    x = 2,440.48

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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.