Home / 8,418.32-11,615.96-4,880.80

Finding the Fourth Proportional to 8,418.32, 11,615.96 and 4,880.80

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Solution

The fourth proportional to 8,418.32, 11,615.96 and 4,880.80 is: 6,734.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.32 : 11,615.96 = 4,880.80 : x
  2. Step 2: Convert to fraction form
    8,418.32/11,615.96 = 4,880.80/x
  3. Step 3: Cross multiply
    8,418.32x = 11,615.96 × 4,880.80
  4. Step 4: Simplify right side
    8,418.32x = 56,695,177.57
  5. Step 5: Solve for x
    x = 56,695,177.57/8,418.32
  6. Step 6: Final answer
    x = 6,734.74

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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.