Home / 5,431.77-8,134.35-4,905.85

Finding the Fourth Proportional to 5,431.77, 8,134.35 and 4,905.85

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Solution

The fourth proportional to 5,431.77, 8,134.35 and 4,905.85 is: 7,346.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.77 : 8,134.35 = 4,905.85 : x
  2. Step 2: Convert to fraction form
    5,431.77/8,134.35 = 4,905.85/x
  3. Step 3: Cross multiply
    5,431.77x = 8,134.35 × 4,905.85
  4. Step 4: Simplify right side
    5,431.77x = 39,905,900.95
  5. Step 5: Solve for x
    x = 39,905,900.95/5,431.77
  6. Step 6: Final answer
    x = 7,346.76

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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.