Home / 9,125.85-13,688.69-2,885.86

Finding the Fourth Proportional to 9,125.85, 13,688.69 and 2,885.86

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Solution

The fourth proportional to 9,125.85, 13,688.69 and 2,885.86 is: 4,328.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,125.85 : 13,688.69 = 2,885.86 : x
  2. Step 2: Convert to fraction form
    9,125.85/13,688.69 = 2,885.86/x
  3. Step 3: Cross multiply
    9,125.85x = 13,688.69 × 2,885.86
  4. Step 4: Simplify right side
    9,125.85x = 39,503,645.60
  5. Step 5: Solve for x
    x = 39,503,645.60/9,125.85
  6. Step 6: Final answer
    x = 4,328.76

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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.