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Finding the Fourth Proportional to 4,739.80, 7,108.90 and 1,276.24

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Solution

The fourth proportional to 4,739.80, 7,108.90 and 1,276.24 is: 1,914.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,739.80 : 7,108.90 = 1,276.24 : x
  2. Step 2: Convert to fraction form
    4,739.80/7,108.90 = 1,276.24/x
  3. Step 3: Cross multiply
    4,739.80x = 7,108.90 × 1,276.24
  4. Step 4: Simplify right side
    4,739.80x = 9,072,662.54
  5. Step 5: Solve for x
    x = 9,072,662.54/4,739.80
  6. Step 6: Final answer
    x = 1,914.14

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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.