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Finding the Fourth Proportional to 1,877.23, 2,816.93 and 723.79

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Solution

The fourth proportional to 1,877.23, 2,816.93 and 723.79 is: 1,086.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.23 : 2,816.93 = 723.79 : x
  2. Step 2: Convert to fraction form
    1,877.23/2,816.93 = 723.79/x
  3. Step 3: Cross multiply
    1,877.23x = 2,816.93 × 723.79
  4. Step 4: Simplify right side
    1,877.23x = 2,038,865.76
  5. Step 5: Solve for x
    x = 2,038,865.76/1,877.23
  6. Step 6: Final answer
    x = 1,086.10

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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.