Home / 7,721.15-11,565.32-4,426.07

Finding the Fourth Proportional to 7,721.15, 11,565.32 and 4,426.07

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Solution

The fourth proportional to 7,721.15, 11,565.32 and 4,426.07 is: 6,629.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.15 : 11,565.32 = 4,426.07 : x
  2. Step 2: Convert to fraction form
    7,721.15/11,565.32 = 4,426.07/x
  3. Step 3: Cross multiply
    7,721.15x = 11,565.32 × 4,426.07
  4. Step 4: Simplify right side
    7,721.15x = 51,188,835.94
  5. Step 5: Solve for x
    x = 51,188,835.94/7,721.15
  6. Step 6: Final answer
    x = 6,629.69

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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.