Home / 6,440.41-8,887.78-3,607.84

Finding the Fourth Proportional to 6,440.41, 8,887.78 and 3,607.84

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Solution

The fourth proportional to 6,440.41, 8,887.78 and 3,607.84 is: 4,978.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,440.41 : 8,887.78 = 3,607.84 : x
  2. Step 2: Convert to fraction form
    6,440.41/8,887.78 = 3,607.84/x
  3. Step 3: Cross multiply
    6,440.41x = 8,887.78 × 3,607.84
  4. Step 4: Simplify right side
    6,440.41x = 32,065,688.20
  5. Step 5: Solve for x
    x = 32,065,688.20/6,440.41
  6. Step 6: Final answer
    x = 4,978.83

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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.