Home / 6,403.68-8,836.74-3,609

Finding the Fourth Proportional to 6,403.68, 8,836.74 and 3,609

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Solution

The fourth proportional to 6,403.68, 8,836.74 and 3,609 is: 4,980.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,403.68 : 8,836.74 = 3,609 : x
  2. Step 2: Convert to fraction form
    6,403.68/8,836.74 = 3,609/x
  3. Step 3: Cross multiply
    6,403.68x = 8,836.74 × 3,609
  4. Step 4: Simplify right side
    6,403.68x = 31,891,794.66
  5. Step 5: Solve for x
    x = 31,891,794.66/6,403.68
  6. Step 6: Final answer
    x = 4,980.23

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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.