Home / 9,400.43-12,972.26-5,420.99

Finding the Fourth Proportional to 9,400.43, 12,972.26 and 5,420.99

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Solution

The fourth proportional to 9,400.43, 12,972.26 and 5,420.99 is: 7,480.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,400.43 : 12,972.26 = 5,420.99 : x
  2. Step 2: Convert to fraction form
    9,400.43/12,972.26 = 5,420.99/x
  3. Step 3: Cross multiply
    9,400.43x = 12,972.26 × 5,420.99
  4. Step 4: Simplify right side
    9,400.43x = 70,322,399.77
  5. Step 5: Solve for x
    x = 70,322,399.77/9,400.43
  6. Step 6: Final answer
    x = 7,480.77

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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.