Home / 3,157.86-4,358.63-2,151.23

Finding the Fourth Proportional to 3,157.86, 4,358.63 and 2,151.23

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Solution

The fourth proportional to 3,157.86, 4,358.63 and 2,151.23 is: 2,969.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.86 : 4,358.63 = 2,151.23 : x
  2. Step 2: Convert to fraction form
    3,157.86/4,358.63 = 2,151.23/x
  3. Step 3: Cross multiply
    3,157.86x = 4,358.63 × 2,151.23
  4. Step 4: Simplify right side
    3,157.86x = 9,376,404.86
  5. Step 5: Solve for x
    x = 9,376,404.86/3,157.86
  6. Step 6: Final answer
    x = 2,969.23

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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.