Home / 8,260.10-12,378.88-3,512.30

Finding the Fourth Proportional to 8,260.10, 12,378.88 and 3,512.30

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Solution

The fourth proportional to 8,260.10, 12,378.88 and 3,512.30 is: 5,263.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,260.10 : 12,378.88 = 3,512.30 : x
  2. Step 2: Convert to fraction form
    8,260.10/12,378.88 = 3,512.30/x
  3. Step 3: Cross multiply
    8,260.10x = 12,378.88 × 3,512.30
  4. Step 4: Simplify right side
    8,260.10x = 43,478,340.22
  5. Step 5: Solve for x
    x = 43,478,340.22/8,260.10
  6. Step 6: Final answer
    x = 5,263.66

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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.