Home / 3,913.75-5,401.43-2,235.40

Finding the Fourth Proportional to 3,913.75, 5,401.43 and 2,235.40

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Solution

The fourth proportional to 3,913.75, 5,401.43 and 2,235.40 is: 3,085.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.75 : 5,401.43 = 2,235.40 : x
  2. Step 2: Convert to fraction form
    3,913.75/5,401.43 = 2,235.40/x
  3. Step 3: Cross multiply
    3,913.75x = 5,401.43 × 2,235.40
  4. Step 4: Simplify right side
    3,913.75x = 12,074,356.62
  5. Step 5: Solve for x
    x = 12,074,356.62/3,913.75
  6. Step 6: Final answer
    x = 3,085.11

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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.