Home / 7,938.21-11,907.90-2,673.20

Finding the Fourth Proportional to 7,938.21, 11,907.90 and 2,673.20

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Solution

The fourth proportional to 7,938.21, 11,907.90 and 2,673.20 is: 4,009.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.21 : 11,907.90 = 2,673.20 : x
  2. Step 2: Convert to fraction form
    7,938.21/11,907.90 = 2,673.20/x
  3. Step 3: Cross multiply
    7,938.21x = 11,907.90 × 2,673.20
  4. Step 4: Simplify right side
    7,938.21x = 31,832,138.74
  5. Step 5: Solve for x
    x = 31,832,138.74/7,938.21
  6. Step 6: Final answer
    x = 4,009.99

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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.