Home / 5,384.20-7,430.30-3,147.79

Finding the Fourth Proportional to 5,384.20, 7,430.30 and 3,147.79

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Solution

The fourth proportional to 5,384.20, 7,430.30 and 3,147.79 is: 4,344.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,384.20 : 7,430.30 = 3,147.79 : x
  2. Step 2: Convert to fraction form
    5,384.20/7,430.30 = 3,147.79/x
  3. Step 3: Cross multiply
    5,384.20x = 7,430.30 × 3,147.79
  4. Step 4: Simplify right side
    5,384.20x = 23,388,994.75
  5. Step 5: Solve for x
    x = 23,388,994.75/5,384.20
  6. Step 6: Final answer
    x = 4,344.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.