Home / 6,378.50-8,798.66-3,984.32

Finding the Fourth Proportional to 6,378.50, 8,798.66 and 3,984.32

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Solution

The fourth proportional to 6,378.50, 8,798.66 and 3,984.32 is: 5,496.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.50 : 8,798.66 = 3,984.32 : x
  2. Step 2: Convert to fraction form
    6,378.50/8,798.66 = 3,984.32/x
  3. Step 3: Cross multiply
    6,378.50x = 8,798.66 × 3,984.32
  4. Step 4: Simplify right side
    6,378.50x = 35,056,677.01
  5. Step 5: Solve for x
    x = 35,056,677.01/6,378.50
  6. Step 6: Final answer
    x = 5,496.07

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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.