Home / 3,815.68-5,263.78-2,401.12

Finding the Fourth Proportional to 3,815.68, 5,263.78 and 2,401.12

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Solution

The fourth proportional to 3,815.68, 5,263.78 and 2,401.12 is: 3,312.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.68 : 5,263.78 = 2,401.12 : x
  2. Step 2: Convert to fraction form
    3,815.68/5,263.78 = 2,401.12/x
  3. Step 3: Cross multiply
    3,815.68x = 5,263.78 × 2,401.12
  4. Step 4: Simplify right side
    3,815.68x = 12,638,967.43
  5. Step 5: Solve for x
    x = 12,638,967.43/3,815.68
  6. Step 6: Final answer
    x = 3,312.38

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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.