Home / 7,941.70-11,912.55-4,005.10

Finding the Fourth Proportional to 7,941.70, 11,912.55 and 4,005.10

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Solution

The fourth proportional to 7,941.70, 11,912.55 and 4,005.10 is: 6,007.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,941.70 : 11,912.55 = 4,005.10 : x
  2. Step 2: Convert to fraction form
    7,941.70/11,912.55 = 4,005.10/x
  3. Step 3: Cross multiply
    7,941.70x = 11,912.55 × 4,005.10
  4. Step 4: Simplify right side
    7,941.70x = 47,710,954.01
  5. Step 5: Solve for x
    x = 47,710,954.01/7,941.70
  6. Step 6: Final answer
    x = 6,007.65

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Double scale
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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.