Home / 4,152.19-6,239.05-3,121.90

Finding the Fourth Proportional to 4,152.19, 6,239.05 and 3,121.90

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Solution

The fourth proportional to 4,152.19, 6,239.05 and 3,121.90 is: 4,690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,152.19 : 6,239.05 = 3,121.90 : x
  2. Step 2: Convert to fraction form
    4,152.19/6,239.05 = 3,121.90/x
  3. Step 3: Cross multiply
    4,152.19x = 6,239.05 × 3,121.90
  4. Step 4: Simplify right side
    4,152.19x = 19,477,690.20
  5. Step 5: Solve for x
    x = 19,477,690.20/4,152.19
  6. Step 6: Final answer
    x = 4,690.94

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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.