Home / 3,913.70-5,400.90-2,342.16

Finding the Fourth Proportional to 3,913.70, 5,400.90 and 2,342.16

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Solution

The fourth proportional to 3,913.70, 5,400.90 and 2,342.16 is: 3,232.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.70 : 5,400.90 = 2,342.16 : x
  2. Step 2: Convert to fraction form
    3,913.70/5,400.90 = 2,342.16/x
  3. Step 3: Cross multiply
    3,913.70x = 5,400.90 × 2,342.16
  4. Step 4: Simplify right side
    3,913.70x = 12,649,771.94
  5. Step 5: Solve for x
    x = 12,649,771.94/3,913.70
  6. Step 6: Final answer
    x = 3,232.18

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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.