Home / 8,416.94-11,615.31-4,640.12

Finding the Fourth Proportional to 8,416.94, 11,615.31 and 4,640.12

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Solution

The fourth proportional to 8,416.94, 11,615.31 and 4,640.12 is: 6,403.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,416.94 : 11,615.31 = 4,640.12 : x
  2. Step 2: Convert to fraction form
    8,416.94/11,615.31 = 4,640.12/x
  3. Step 3: Cross multiply
    8,416.94x = 11,615.31 × 4,640.12
  4. Step 4: Simplify right side
    8,416.94x = 53,896,374.16
  5. Step 5: Solve for x
    x = 53,896,374.16/8,416.94
  6. Step 6: Final answer
    x = 6,403.33

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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.