Home / 9,170.15-13,750.07-2,928.70

Finding the Fourth Proportional to 9,170.15, 13,750.07 and 2,928.70

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Solution

The fourth proportional to 9,170.15, 13,750.07 and 2,928.70 is: 4,391.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.15 : 13,750.07 = 2,928.70 : x
  2. Step 2: Convert to fraction form
    9,170.15/13,750.07 = 2,928.70/x
  3. Step 3: Cross multiply
    9,170.15x = 13,750.07 × 2,928.70
  4. Step 4: Simplify right side
    9,170.15x = 40,269,780.99
  5. Step 5: Solve for x
    x = 40,269,780.99/9,170.15
  6. Step 6: Final answer
    x = 4,391.40

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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.