Home / 9,362.31-12,920-5,170.56

Finding the Fourth Proportional to 9,362.31, 12,920 and 5,170.56

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Solution

The fourth proportional to 9,362.31, 12,920 and 5,170.56 is: 7,135.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.31 : 12,920 = 5,170.56 : x
  2. Step 2: Convert to fraction form
    9,362.31/12,920 = 5,170.56/x
  3. Step 3: Cross multiply
    9,362.31x = 12,920 × 5,170.56
  4. Step 4: Simplify right side
    9,362.31x = 66,803,635.20
  5. Step 5: Solve for x
    x = 66,803,635.20/9,362.31
  6. Step 6: Final answer
    x = 7,135.38

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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.