Home / 6,440.12-8,885.58-3,645.56

Finding the Fourth Proportional to 6,440.12, 8,885.58 and 3,645.56

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Solution

The fourth proportional to 6,440.12, 8,885.58 and 3,645.56 is: 5,029.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,440.12 : 8,885.58 = 3,645.56 : x
  2. Step 2: Convert to fraction form
    6,440.12/8,885.58 = 3,645.56/x
  3. Step 3: Cross multiply
    6,440.12x = 8,885.58 × 3,645.56
  4. Step 4: Simplify right side
    6,440.12x = 32,392,915.02
  5. Step 5: Solve for x
    x = 32,392,915.02/6,440.12
  6. Step 6: Final answer
    x = 5,029.86

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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.