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Finding the Fourth Proportional to 2,285.02, 3,427.71 and 641.70

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Solution

The fourth proportional to 2,285.02, 3,427.71 and 641.70 is: 962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.02 : 3,427.71 = 641.70 : x
  2. Step 2: Convert to fraction form
    2,285.02/3,427.71 = 641.70/x
  3. Step 3: Cross multiply
    2,285.02x = 3,427.71 × 641.70
  4. Step 4: Simplify right side
    2,285.02x = 2,199,561.51
  5. Step 5: Solve for x
    x = 2,199,561.51/2,285.02
  6. Step 6: Final answer
    x = 962.60

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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.