Home / 4,750.17-7,125.82-1,978.72

Finding the Fourth Proportional to 4,750.17, 7,125.82 and 1,978.72

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Solution

The fourth proportional to 4,750.17, 7,125.82 and 1,978.72 is: 2,968.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,750.17 : 7,125.82 = 1,978.72 : x
  2. Step 2: Convert to fraction form
    4,750.17/7,125.82 = 1,978.72/x
  3. Step 3: Cross multiply
    4,750.17x = 7,125.82 × 1,978.72
  4. Step 4: Simplify right side
    4,750.17x = 14,100,002.55
  5. Step 5: Solve for x
    x = 14,100,002.55/4,750.17
  6. Step 6: Final answer
    x = 2,968.32

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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.