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Finding the Fourth Proportional to 7,642.80, 10,546.93 and 4,285.61

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Solution

The fourth proportional to 7,642.80, 10,546.93 and 4,285.61 is: 5,914.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,642.80 : 10,546.93 = 4,285.61 : x
  2. Step 2: Convert to fraction form
    7,642.80/10,546.93 = 4,285.61/x
  3. Step 3: Cross multiply
    7,642.80x = 10,546.93 × 4,285.61
  4. Step 4: Simplify right side
    7,642.80x = 45,199,954.51
  5. Step 5: Solve for x
    x = 45,199,954.51/7,642.80
  6. Step 6: Final answer
    x = 5,914.06

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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.