Home / 3,155.29-4,354.32-1,829.78

Finding the Fourth Proportional to 3,155.29, 4,354.32 and 1,829.78

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Solution

The fourth proportional to 3,155.29, 4,354.32 and 1,829.78 is: 2,525.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.29 : 4,354.32 = 1,829.78 : x
  2. Step 2: Convert to fraction form
    3,155.29/4,354.32 = 1,829.78/x
  3. Step 3: Cross multiply
    3,155.29x = 4,354.32 × 1,829.78
  4. Step 4: Simplify right side
    3,155.29x = 7,967,440.79
  5. Step 5: Solve for x
    x = 7,967,440.79/3,155.29
  6. Step 6: Final answer
    x = 2,525.11

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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.