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Finding the Fourth Proportional to 2,285.10, 3,427.86 and 641.64

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Solution

The fourth proportional to 2,285.10, 3,427.86 and 641.64 is: 962.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.10 : 3,427.86 = 641.64 : x
  2. Step 2: Convert to fraction form
    2,285.10/3,427.86 = 641.64/x
  3. Step 3: Cross multiply
    2,285.10x = 3,427.86 × 641.64
  4. Step 4: Simplify right side
    2,285.10x = 2,199,448.07
  5. Step 5: Solve for x
    x = 2,199,448.07/2,285.10
  6. Step 6: Final answer
    x = 962.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.