Home / 7,905.85-11,858.72-3,225.83

Finding the Fourth Proportional to 7,905.85, 11,858.72 and 3,225.83

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Solution

The fourth proportional to 7,905.85, 11,858.72 and 3,225.83 is: 4,838.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.85 : 11,858.72 = 3,225.83 : x
  2. Step 2: Convert to fraction form
    7,905.85/11,858.72 = 3,225.83/x
  3. Step 3: Cross multiply
    7,905.85x = 11,858.72 × 3,225.83
  4. Step 4: Simplify right side
    7,905.85x = 38,254,198.61
  5. Step 5: Solve for x
    x = 38,254,198.61/7,905.85
  6. Step 6: Final answer
    x = 4,838.72

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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.