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Finding the Fourth Proportional to 4,739.39, 7,108.76 and 1,452.20

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Solution

The fourth proportional to 4,739.39, 7,108.76 and 1,452.20 is: 2,178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,739.39 : 7,108.76 = 1,452.20 : x
  2. Step 2: Convert to fraction form
    4,739.39/7,108.76 = 1,452.20/x
  3. Step 3: Cross multiply
    4,739.39x = 7,108.76 × 1,452.20
  4. Step 4: Simplify right side
    4,739.39x = 10,323,341.27
  5. Step 5: Solve for x
    x = 10,323,341.27/4,739.39
  6. Step 6: Final answer
    x = 2,178.20

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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.