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Finding the Fourth Proportional to 6,448.04, 8,894.90 and 3,929.54

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Solution

The fourth proportional to 6,448.04, 8,894.90 and 3,929.54 is: 5,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,448.04 : 8,894.90 = 3,929.54 : x
  2. Step 2: Convert to fraction form
    6,448.04/8,894.90 = 3,929.54/x
  3. Step 3: Cross multiply
    6,448.04x = 8,894.90 × 3,929.54
  4. Step 4: Simplify right side
    6,448.04x = 34,952,865.35
  5. Step 5: Solve for x
    x = 34,952,865.35/6,448.04
  6. Step 6: Final answer
    x = 5,420.70

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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.