Home / 3,938.08-5,907.12-1,342.72

Finding the Fourth Proportional to 3,938.08, 5,907.12 and 1,342.72

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Solution

The fourth proportional to 3,938.08, 5,907.12 and 1,342.72 is: 2,014.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.08 : 5,907.12 = 1,342.72 : x
  2. Step 2: Convert to fraction form
    3,938.08/5,907.12 = 1,342.72/x
  3. Step 3: Cross multiply
    3,938.08x = 5,907.12 × 1,342.72
  4. Step 4: Simplify right side
    3,938.08x = 7,931,608.17
  5. Step 5: Solve for x
    x = 7,931,608.17/3,938.08
  6. Step 6: Final answer
    x = 2,014.08

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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.