Home / 6,913.44-9,539.92-3,929.20

Finding the Fourth Proportional to 6,913.44, 9,539.92 and 3,929.20

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Solution

The fourth proportional to 6,913.44, 9,539.92 and 3,929.20 is: 5,421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,913.44 : 9,539.92 = 3,929.20 : x
  2. Step 2: Convert to fraction form
    6,913.44/9,539.92 = 3,929.20/x
  3. Step 3: Cross multiply
    6,913.44x = 9,539.92 × 3,929.20
  4. Step 4: Simplify right side
    6,913.44x = 37,484,253.66
  5. Step 5: Solve for x
    x = 37,484,253.66/6,913.44
  6. Step 6: Final answer
    x = 5,421.94

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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.