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Finding the Fourth Proportional to 4,762.64, 7,141.44 and 1,838

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Solution

The fourth proportional to 4,762.64, 7,141.44 and 1,838 is: 2,756.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,762.64 : 7,141.44 = 1,838 : x
  2. Step 2: Convert to fraction form
    4,762.64/7,141.44 = 1,838/x
  3. Step 3: Cross multiply
    4,762.64x = 7,141.44 × 1,838
  4. Step 4: Simplify right side
    4,762.64x = 13,125,966.72
  5. Step 5: Solve for x
    x = 13,125,966.72/4,762.64
  6. Step 6: Final answer
    x = 2,756.03

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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.