Home / 9,120.50-12,586.32-4,928.78

Finding the Fourth Proportional to 9,120.50, 12,586.32 and 4,928.78

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Solution

The fourth proportional to 9,120.50, 12,586.32 and 4,928.78 is: 6,801.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.50 : 12,586.32 = 4,928.78 : x
  2. Step 2: Convert to fraction form
    9,120.50/12,586.32 = 4,928.78/x
  3. Step 3: Cross multiply
    9,120.50x = 12,586.32 × 4,928.78
  4. Step 4: Simplify right side
    9,120.50x = 62,035,202.29
  5. Step 5: Solve for x
    x = 62,035,202.29/9,120.50
  6. Step 6: Final answer
    x = 6,801.73

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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.