Home / 5,206.20-7,809.30-1,919.40

Finding the Fourth Proportional to 5,206.20, 7,809.30 and 1,919.40

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Solution

The fourth proportional to 5,206.20, 7,809.30 and 1,919.40 is: 2,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,206.20 : 7,809.30 = 1,919.40 : x
  2. Step 2: Convert to fraction form
    5,206.20/7,809.30 = 1,919.40/x
  3. Step 3: Cross multiply
    5,206.20x = 7,809.30 × 1,919.40
  4. Step 4: Simplify right side
    5,206.20x = 14,989,170.42
  5. Step 5: Solve for x
    x = 14,989,170.42/5,206.20
  6. Step 6: Final answer
    x = 2,879.10

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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.