Home / 8,391.36-11,579.99-4,614.78

Finding the Fourth Proportional to 8,391.36, 11,579.99 and 4,614.78

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Solution

The fourth proportional to 8,391.36, 11,579.99 and 4,614.78 is: 6,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.36 : 11,579.99 = 4,614.78 : x
  2. Step 2: Convert to fraction form
    8,391.36/11,579.99 = 4,614.78/x
  3. Step 3: Cross multiply
    8,391.36x = 11,579.99 × 4,614.78
  4. Step 4: Simplify right side
    8,391.36x = 53,439,083.18
  5. Step 5: Solve for x
    x = 53,439,083.18/8,391.36
  6. Step 6: Final answer
    x = 6,368.35

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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.