Home / 5,415.40-8,123.10-3,348.55

Finding the Fourth Proportional to 5,415.40, 8,123.10 and 3,348.55

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Solution

The fourth proportional to 5,415.40, 8,123.10 and 3,348.55 is: 5,022.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.40 : 8,123.10 = 3,348.55 : x
  2. Step 2: Convert to fraction form
    5,415.40/8,123.10 = 3,348.55/x
  3. Step 3: Cross multiply
    5,415.40x = 8,123.10 × 3,348.55
  4. Step 4: Simplify right side
    5,415.40x = 27,200,606.51
  5. Step 5: Solve for x
    x = 27,200,606.51/5,415.40
  6. Step 6: Final answer
    x = 5,022.83

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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.