Home / 7,728.31-10,665.01-4,191.53

Finding the Fourth Proportional to 7,728.31, 10,665.01 and 4,191.53

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Solution

The fourth proportional to 7,728.31, 10,665.01 and 4,191.53 is: 5,784.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.31 : 10,665.01 = 4,191.53 : x
  2. Step 2: Convert to fraction form
    7,728.31/10,665.01 = 4,191.53/x
  3. Step 3: Cross multiply
    7,728.31x = 10,665.01 × 4,191.53
  4. Step 4: Simplify right side
    7,728.31x = 44,702,645.56
  5. Step 5: Solve for x
    x = 44,702,645.56/7,728.31
  6. Step 6: Final answer
    x = 5,784.27

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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.