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Finding the Fourth Proportional to 4,581, 6,321.80 and 2,812.56

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Solution

The fourth proportional to 4,581, 6,321.80 and 2,812.56 is: 3,881.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,581 : 6,321.80 = 2,812.56 : x
  2. Step 2: Convert to fraction form
    4,581/6,321.80 = 2,812.56/x
  3. Step 3: Cross multiply
    4,581x = 6,321.80 × 2,812.56
  4. Step 4: Simplify right side
    4,581x = 17,780,441.81
  5. Step 5: Solve for x
    x = 17,780,441.81/4,581
  6. Step 6: Final answer
    x = 3,881.35

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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.