Home / 6,447.79-8,896.39-4,089.07

Finding the Fourth Proportional to 6,447.79, 8,896.39 and 4,089.07

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Solution

The fourth proportional to 6,447.79, 8,896.39 and 4,089.07 is: 5,641.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447.79 : 8,896.39 = 4,089.07 : x
  2. Step 2: Convert to fraction form
    6,447.79/8,896.39 = 4,089.07/x
  3. Step 3: Cross multiply
    6,447.79x = 8,896.39 × 4,089.07
  4. Step 4: Simplify right side
    6,447.79x = 36,377,961.46
  5. Step 5: Solve for x
    x = 36,377,961.46/6,447.79
  6. Step 6: Final answer
    x = 5,641.93

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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.