Home / 4,207.55-6,311.23-1,129.55

Finding the Fourth Proportional to 4,207.55, 6,311.23 and 1,129.55

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Solution

The fourth proportional to 4,207.55, 6,311.23 and 1,129.55 is: 1,694.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,207.55 : 6,311.23 = 1,129.55 : x
  2. Step 2: Convert to fraction form
    4,207.55/6,311.23 = 1,129.55/x
  3. Step 3: Cross multiply
    4,207.55x = 6,311.23 × 1,129.55
  4. Step 4: Simplify right side
    4,207.55x = 7,128,815.47
  5. Step 5: Solve for x
    x = 7,128,815.47/4,207.55
  6. Step 6: Final answer
    x = 1,694.29

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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.