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Finding the Fourth Proportional to 6,398.70, 8,829.60 and 4,721.04

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Solution

The fourth proportional to 6,398.70, 8,829.60 and 4,721.04 is: 6,514.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,398.70 : 8,829.60 = 4,721.04 : x
  2. Step 2: Convert to fraction form
    6,398.70/8,829.60 = 4,721.04/x
  3. Step 3: Cross multiply
    6,398.70x = 8,829.60 × 4,721.04
  4. Step 4: Simplify right side
    6,398.70x = 41,684,894.78
  5. Step 5: Solve for x
    x = 41,684,894.78/6,398.70
  6. Step 6: Final answer
    x = 6,514.59

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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.