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Finding the Fourth Proportional to 2,803.74, 3,869.54 and 1,624.89

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Solution

The fourth proportional to 2,803.74, 3,869.54 and 1,624.89 is: 2,242.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.74 : 3,869.54 = 1,624.89 : x
  2. Step 2: Convert to fraction form
    2,803.74/3,869.54 = 1,624.89/x
  3. Step 3: Cross multiply
    2,803.74x = 3,869.54 × 1,624.89
  4. Step 4: Simplify right side
    2,803.74x = 6,287,568.73
  5. Step 5: Solve for x
    x = 6,287,568.73/2,803.74
  6. Step 6: Final answer
    x = 2,242.56

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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.