Home / 3,157.16-4,356.56-1,831.22

Finding the Fourth Proportional to 3,157.16, 4,356.56 and 1,831.22

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Solution

The fourth proportional to 3,157.16, 4,356.56 and 1,831.22 is: 2,526.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.16 : 4,356.56 = 1,831.22 : x
  2. Step 2: Convert to fraction form
    3,157.16/4,356.56 = 1,831.22/x
  3. Step 3: Cross multiply
    3,157.16x = 4,356.56 × 1,831.22
  4. Step 4: Simplify right side
    3,157.16x = 7,977,819.80
  5. Step 5: Solve for x
    x = 7,977,819.80/3,157.16
  6. Step 6: Final answer
    x = 2,526.90

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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.