Home / 5,424.90-8,140.05-3,086.70

Finding the Fourth Proportional to 5,424.90, 8,140.05 and 3,086.70

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Solution

The fourth proportional to 5,424.90, 8,140.05 and 3,086.70 is: 4,631.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.90 : 8,140.05 = 3,086.70 : x
  2. Step 2: Convert to fraction form
    5,424.90/8,140.05 = 3,086.70/x
  3. Step 3: Cross multiply
    5,424.90x = 8,140.05 × 3,086.70
  4. Step 4: Simplify right side
    5,424.90x = 25,125,892.34
  5. Step 5: Solve for x
    x = 25,125,892.34/5,424.90
  6. Step 6: Final answer
    x = 4,631.59

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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.