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Finding the Fourth Proportional to 4,754.80, 7,132.23 and 1,978.45

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Solution

The fourth proportional to 4,754.80, 7,132.23 and 1,978.45 is: 2,967.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,754.80 : 7,132.23 = 1,978.45 : x
  2. Step 2: Convert to fraction form
    4,754.80/7,132.23 = 1,978.45/x
  3. Step 3: Cross multiply
    4,754.80x = 7,132.23 × 1,978.45
  4. Step 4: Simplify right side
    4,754.80x = 14,110,760.44
  5. Step 5: Solve for x
    x = 14,110,760.44/4,754.80
  6. Step 6: Final answer
    x = 2,967.69

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1.5x scale

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.