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Finding the Fourth Proportional to 6,128.98, 8,458.48 and 3,440.46

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Solution

The fourth proportional to 6,128.98, 8,458.48 and 3,440.46 is: 4,748.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128.98 : 8,458.48 = 3,440.46 : x
  2. Step 2: Convert to fraction form
    6,128.98/8,458.48 = 3,440.46/x
  3. Step 3: Cross multiply
    6,128.98x = 8,458.48 × 3,440.46
  4. Step 4: Simplify right side
    6,128.98x = 29,101,062.10
  5. Step 5: Solve for x
    x = 29,101,062.10/6,128.98
  6. Step 6: Final answer
    x = 4,748.11

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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.