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Finding the Fourth Proportional to 2,903.63, 4,355.70 and 823.65

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Solution

The fourth proportional to 2,903.63, 4,355.70 and 823.65 is: 1,235.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.63 : 4,355.70 = 823.65 : x
  2. Step 2: Convert to fraction form
    2,903.63/4,355.70 = 823.65/x
  3. Step 3: Cross multiply
    2,903.63x = 4,355.70 × 823.65
  4. Step 4: Simplify right side
    2,903.63x = 3,587,572.31
  5. Step 5: Solve for x
    x = 3,587,572.31/2,903.63
  6. Step 6: Final answer
    x = 1,235.55

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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.