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Finding the Fourth Proportional to 1,872.54, 2,809.53 and 703.08

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Solution

The fourth proportional to 1,872.54, 2,809.53 and 703.08 is: 1,054.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.54 : 2,809.53 = 703.08 : x
  2. Step 2: Convert to fraction form
    1,872.54/2,809.53 = 703.08/x
  3. Step 3: Cross multiply
    1,872.54x = 2,809.53 × 703.08
  4. Step 4: Simplify right side
    1,872.54x = 1,975,324.35
  5. Step 5: Solve for x
    x = 1,975,324.35/1,872.54
  6. Step 6: Final answer
    x = 1,054.89

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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.