Home / 7,149.12-10,720.80-4,548.84

Finding the Fourth Proportional to 7,149.12, 10,720.80 and 4,548.84

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Solution

The fourth proportional to 7,149.12, 10,720.80 and 4,548.84 is: 6,821.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.12 : 10,720.80 = 4,548.84 : x
  2. Step 2: Convert to fraction form
    7,149.12/10,720.80 = 4,548.84/x
  3. Step 3: Cross multiply
    7,149.12x = 10,720.80 × 4,548.84
  4. Step 4: Simplify right side
    7,149.12x = 48,767,203.87
  5. Step 5: Solve for x
    x = 48,767,203.87/7,149.12
  6. Step 6: Final answer
    x = 6,821.43

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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.