Home / 2,831.79-3,907.88-1,712.51

Finding the Fourth Proportional to 2,831.79, 3,907.88 and 1,712.51

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Solution

The fourth proportional to 2,831.79, 3,907.88 and 1,712.51 is: 2,363.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.79 : 3,907.88 = 1,712.51 : x
  2. Step 2: Convert to fraction form
    2,831.79/3,907.88 = 1,712.51/x
  3. Step 3: Cross multiply
    2,831.79x = 3,907.88 × 1,712.51
  4. Step 4: Simplify right side
    2,831.79x = 6,692,276.55
  5. Step 5: Solve for x
    x = 6,692,276.55/2,831.79
  6. Step 6: Final answer
    x = 2,363.26

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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.