Home / 6,260.40-8,640.32-3,607.60

Finding the Fourth Proportional to 6,260.40, 8,640.32 and 3,607.60

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Solution

The fourth proportional to 6,260.40, 8,640.32 and 3,607.60 is: 4,979.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,260.40 : 8,640.32 = 3,607.60 : x
  2. Step 2: Convert to fraction form
    6,260.40/8,640.32 = 3,607.60/x
  3. Step 3: Cross multiply
    6,260.40x = 8,640.32 × 3,607.60
  4. Step 4: Simplify right side
    6,260.40x = 31,170,818.43
  5. Step 5: Solve for x
    x = 31,170,818.43/6,260.40
  6. Step 6: Final answer
    x = 4,979.05

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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.