Home / 5,429.20-8,143.80-5,356.30

Finding the Fourth Proportional to 5,429.20, 8,143.80 and 5,356.30

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Solution

The fourth proportional to 5,429.20, 8,143.80 and 5,356.30 is: 8,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.20 : 8,143.80 = 5,356.30 : x
  2. Step 2: Convert to fraction form
    5,429.20/8,143.80 = 5,356.30/x
  3. Step 3: Cross multiply
    5,429.20x = 8,143.80 × 5,356.30
  4. Step 4: Simplify right side
    5,429.20x = 43,620,635.94
  5. Step 5: Solve for x
    x = 43,620,635.94/5,429.20
  6. Step 6: Final answer
    x = 8,034.45

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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.