Home / 7,931.50-11,894.37-3,546.70

Finding the Fourth Proportional to 7,931.50, 11,894.37 and 3,546.70

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Solution

The fourth proportional to 7,931.50, 11,894.37 and 3,546.70 is: 5,318.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.50 : 11,894.37 = 3,546.70 : x
  2. Step 2: Convert to fraction form
    7,931.50/11,894.37 = 3,546.70/x
  3. Step 3: Cross multiply
    7,931.50x = 11,894.37 × 3,546.70
  4. Step 4: Simplify right side
    7,931.50x = 42,185,762.08
  5. Step 5: Solve for x
    x = 42,185,762.08/7,931.50
  6. Step 6: Final answer
    x = 5,318.76

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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.