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Finding the Fourth Proportional to 4,762, 7,142.76 and 1,474.84

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Solution

The fourth proportional to 4,762, 7,142.76 and 1,474.84 is: 2,212.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,762 : 7,142.76 = 1,474.84 : x
  2. Step 2: Convert to fraction form
    4,762/7,142.76 = 1,474.84/x
  3. Step 3: Cross multiply
    4,762x = 7,142.76 × 1,474.84
  4. Step 4: Simplify right side
    4,762x = 10,534,428.16
  5. Step 5: Solve for x
    x = 10,534,428.16/4,762
  6. Step 6: Final answer
    x = 2,212.19

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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.