Home / 7,938.20-11,907.30-2,391.32

Finding the Fourth Proportional to 7,938.20, 11,907.30 and 2,391.32

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Solution

The fourth proportional to 7,938.20, 11,907.30 and 2,391.32 is: 3,586.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.20 : 11,907.30 = 2,391.32 : x
  2. Step 2: Convert to fraction form
    7,938.20/11,907.30 = 2,391.32/x
  3. Step 3: Cross multiply
    7,938.20x = 11,907.30 × 2,391.32
  4. Step 4: Simplify right side
    7,938.20x = 28,474,164.64
  5. Step 5: Solve for x
    x = 28,474,164.64/7,938.20
  6. Step 6: Final answer
    x = 3,586.98

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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.