Home / 7,929.55-10,943.40-4,945.78

Finding the Fourth Proportional to 7,929.55, 10,943.40 and 4,945.78

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Solution

The fourth proportional to 7,929.55, 10,943.40 and 4,945.78 is: 6,825.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.55 : 10,943.40 = 4,945.78 : x
  2. Step 2: Convert to fraction form
    7,929.55/10,943.40 = 4,945.78/x
  3. Step 3: Cross multiply
    7,929.55x = 10,943.40 × 4,945.78
  4. Step 4: Simplify right side
    7,929.55x = 54,123,648.85
  5. Step 5: Solve for x
    x = 54,123,648.85/7,929.55
  6. Step 6: Final answer
    x = 6,825.56

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1.5x scale

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.