Home / 9,400.40-12,972.55-5,623.72

Finding the Fourth Proportional to 9,400.40, 12,972.55 and 5,623.72

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Solution

The fourth proportional to 9,400.40, 12,972.55 and 5,623.72 is: 7,760.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,400.40 : 12,972.55 = 5,623.72 : x
  2. Step 2: Convert to fraction form
    9,400.40/12,972.55 = 5,623.72/x
  3. Step 3: Cross multiply
    9,400.40x = 12,972.55 × 5,623.72
  4. Step 4: Simplify right side
    9,400.40x = 72,953,895.90
  5. Step 5: Solve for x
    x = 72,953,895.90/9,400.40
  6. Step 6: Final answer
    x = 7,760.73

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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.