Home / 3,929.58-5,429.84-2,925.36

Finding the Fourth Proportional to 3,929.58, 5,429.84 and 2,925.36

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Solution

The fourth proportional to 3,929.58, 5,429.84 and 2,925.36 is: 4,042.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.58 : 5,429.84 = 2,925.36 : x
  2. Step 2: Convert to fraction form
    3,929.58/5,429.84 = 2,925.36/x
  3. Step 3: Cross multiply
    3,929.58x = 5,429.84 × 2,925.36
  4. Step 4: Simplify right side
    3,929.58x = 15,884,222.12
  5. Step 5: Solve for x
    x = 15,884,222.12/3,929.58
  6. Step 6: Final answer
    x = 4,042.22

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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.