Home / 3,924.90-5,421.15-2,934.56

Finding the Fourth Proportional to 3,924.90, 5,421.15 and 2,934.56

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Solution

The fourth proportional to 3,924.90, 5,421.15 and 2,934.56 is: 4,053.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.90 : 5,421.15 = 2,934.56 : x
  2. Step 2: Convert to fraction form
    3,924.90/5,421.15 = 2,934.56/x
  3. Step 3: Cross multiply
    3,924.90x = 5,421.15 × 2,934.56
  4. Step 4: Simplify right side
    3,924.90x = 15,908,703.50
  5. Step 5: Solve for x
    x = 15,908,703.50/3,924.90
  6. Step 6: Final answer
    x = 4,053.28

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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.