Home / 6,929.78-9,563.79-3,946.20

Finding the Fourth Proportional to 6,929.78, 9,563.79 and 3,946.20

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Solution

The fourth proportional to 6,929.78, 9,563.79 and 3,946.20 is: 5,446.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,929.78 : 9,563.79 = 3,946.20 : x
  2. Step 2: Convert to fraction form
    6,929.78/9,563.79 = 3,946.20/x
  3. Step 3: Cross multiply
    6,929.78x = 9,563.79 × 3,946.20
  4. Step 4: Simplify right side
    6,929.78x = 37,740,628.10
  5. Step 5: Solve for x
    x = 37,740,628.10/6,929.78
  6. Step 6: Final answer
    x = 5,446.15

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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.