Home / 7,225.60-10,838.40-3,945.10

Finding the Fourth Proportional to 7,225.60, 10,838.40 and 3,945.10

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Solution

The fourth proportional to 7,225.60, 10,838.40 and 3,945.10 is: 5,917.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.60 : 10,838.40 = 3,945.10 : x
  2. Step 2: Convert to fraction form
    7,225.60/10,838.40 = 3,945.10/x
  3. Step 3: Cross multiply
    7,225.60x = 10,838.40 × 3,945.10
  4. Step 4: Simplify right side
    7,225.60x = 42,758,571.84
  5. Step 5: Solve for x
    x = 42,758,571.84/7,225.60
  6. Step 6: Final answer
    x = 5,917.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.