Home / 5,415.40-8,123.10-3,568.60

Finding the Fourth Proportional to 5,415.40, 8,123.10 and 3,568.60

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Solution

The fourth proportional to 5,415.40, 8,123.10 and 3,568.60 is: 5,352.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.40 : 8,123.10 = 3,568.60 : x
  2. Step 2: Convert to fraction form
    5,415.40/8,123.10 = 3,568.60/x
  3. Step 3: Cross multiply
    5,415.40x = 8,123.10 × 3,568.60
  4. Step 4: Simplify right side
    5,415.40x = 28,988,094.66
  5. Step 5: Solve for x
    x = 28,988,094.66/5,415.40
  6. Step 6: Final answer
    x = 5,352.90

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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.