Home / 7,926.72-10,938.96-4,390

Finding the Fourth Proportional to 7,926.72, 10,938.96 and 4,390

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Solution

The fourth proportional to 7,926.72, 10,938.96 and 4,390 is: 6,058.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,926.72 : 10,938.96 = 4,390 : x
  2. Step 2: Convert to fraction form
    7,926.72/10,938.96 = 4,390/x
  3. Step 3: Cross multiply
    7,926.72x = 10,938.96 × 4,390
  4. Step 4: Simplify right side
    7,926.72x = 48,022,034.40
  5. Step 5: Solve for x
    x = 48,022,034.40/7,926.72
  6. Step 6: Final answer
    x = 6,058.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.