Home / 5,206.20-7,809.30-5,129.40

Finding the Fourth Proportional to 5,206.20, 7,809.30 and 5,129.40

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Solution

The fourth proportional to 5,206.20, 7,809.30 and 5,129.40 is: 7,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,206.20 : 7,809.30 = 5,129.40 : x
  2. Step 2: Convert to fraction form
    5,206.20/7,809.30 = 5,129.40/x
  3. Step 3: Cross multiply
    5,206.20x = 7,809.30 × 5,129.40
  4. Step 4: Simplify right side
    5,206.20x = 40,057,023.42
  5. Step 5: Solve for x
    x = 40,057,023.42/5,206.20
  6. Step 6: Final answer
    x = 7,694.10

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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.