Home / 5,431.45-8,140.88-2,503.61

Finding the Fourth Proportional to 5,431.45, 8,140.88 and 2,503.61

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Solution

The fourth proportional to 5,431.45, 8,140.88 and 2,503.61 is: 3,752.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.45 : 8,140.88 = 2,503.61 : x
  2. Step 2: Convert to fraction form
    5,431.45/8,140.88 = 2,503.61/x
  3. Step 3: Cross multiply
    5,431.45x = 8,140.88 × 2,503.61
  4. Step 4: Simplify right side
    5,431.45x = 20,381,588.58
  5. Step 5: Solve for x
    x = 20,381,588.58/5,431.45
  6. Step 6: Final answer
    x = 3,752.51

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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.