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Finding the Fourth Proportional to 4,482.90, 6,754.23 and 4,128.66

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Solution

The fourth proportional to 4,482.90, 6,754.23 and 4,128.66 is: 6,220.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,482.90 : 6,754.23 = 4,128.66 : x
  2. Step 2: Convert to fraction form
    4,482.90/6,754.23 = 4,128.66/x
  3. Step 3: Cross multiply
    4,482.90x = 6,754.23 × 4,128.66
  4. Step 4: Simplify right side
    4,482.90x = 27,885,919.23
  5. Step 5: Solve for x
    x = 27,885,919.23/4,482.90
  6. Step 6: Final answer
    x = 6,220.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.