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Finding the Fourth Proportional to 1,769.74, 2,641.87 and 1,641.58

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Solution

The fourth proportional to 1,769.74, 2,641.87 and 1,641.58 is: 2,450.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,769.74 : 2,641.87 = 1,641.58 : x
  2. Step 2: Convert to fraction form
    1,769.74/2,641.87 = 1,641.58/x
  3. Step 3: Cross multiply
    1,769.74x = 2,641.87 × 1,641.58
  4. Step 4: Simplify right side
    1,769.74x = 4,336,840.95
  5. Step 5: Solve for x
    x = 4,336,840.95/1,769.74
  6. Step 6: Final answer
    x = 2,450.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.