Home / 9,355.30-12,912.53-5,378.73

Finding the Fourth Proportional to 9,355.30, 12,912.53 and 5,378.73

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Solution

The fourth proportional to 9,355.30, 12,912.53 and 5,378.73 is: 7,423.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.30 : 12,912.53 = 5,378.73 : x
  2. Step 2: Convert to fraction form
    9,355.30/12,912.53 = 5,378.73/x
  3. Step 3: Cross multiply
    9,355.30x = 12,912.53 × 5,378.73
  4. Step 4: Simplify right side
    9,355.30x = 69,452,947.92
  5. Step 5: Solve for x
    x = 69,452,947.92/9,355.30
  6. Step 6: Final answer
    x = 7,423.91

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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.