Home / 9,078.50-12,528.11-5,099.78

Finding the Fourth Proportional to 9,078.50, 12,528.11 and 5,099.78

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Solution

The fourth proportional to 9,078.50, 12,528.11 and 5,099.78 is: 7,037.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.50 : 12,528.11 = 5,099.78 : x
  2. Step 2: Convert to fraction form
    9,078.50/12,528.11 = 5,099.78/x
  3. Step 3: Cross multiply
    9,078.50x = 12,528.11 × 5,099.78
  4. Step 4: Simplify right side
    9,078.50x = 63,890,516.68
  5. Step 5: Solve for x
    x = 63,890,516.68/9,078.50
  6. Step 6: Final answer
    x = 7,037.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.