Home / 6,403.56-8,836.98-3,609

Finding the Fourth Proportional to 6,403.56, 8,836.98 and 3,609

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Solution

The fourth proportional to 6,403.56, 8,836.98 and 3,609 is: 4,980.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,403.56 : 8,836.98 = 3,609 : x
  2. Step 2: Convert to fraction form
    6,403.56/8,836.98 = 3,609/x
  3. Step 3: Cross multiply
    6,403.56x = 8,836.98 × 3,609
  4. Step 4: Simplify right side
    6,403.56x = 31,892,660.82
  5. Step 5: Solve for x
    x = 31,892,660.82/6,403.56
  6. Step 6: Final answer
    x = 4,980.46

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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.