Home / 2,929.40-4,390.22-1,831.16

Finding the Fourth Proportional to 2,929.40, 4,390.22 and 1,831.16

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Solution

The fourth proportional to 2,929.40, 4,390.22 and 1,831.16 is: 2,744.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.40 : 4,390.22 = 1,831.16 : x
  2. Step 2: Convert to fraction form
    2,929.40/4,390.22 = 1,831.16/x
  3. Step 3: Cross multiply
    2,929.40x = 4,390.22 × 1,831.16
  4. Step 4: Simplify right side
    2,929.40x = 8,039,195.26
  5. Step 5: Solve for x
    x = 8,039,195.26/2,929.40
  6. Step 6: Final answer
    x = 2,744.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.