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Finding the Fourth Proportional to 5,533.80, 8,300.70 and 3,419.70

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Solution

The fourth proportional to 5,533.80, 8,300.70 and 3,419.70 is: 5,129.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,533.80 : 8,300.70 = 3,419.70 : x
  2. Step 2: Convert to fraction form
    5,533.80/8,300.70 = 3,419.70/x
  3. Step 3: Cross multiply
    5,533.80x = 8,300.70 × 3,419.70
  4. Step 4: Simplify right side
    5,533.80x = 28,385,903.79
  5. Step 5: Solve for x
    x = 28,385,903.79/5,533.80
  6. Step 6: Final answer
    x = 5,129.55

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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.