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Finding the Fourth Proportional to 6,613.61, 9,920.66 and 1,683.36

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Solution

The fourth proportional to 6,613.61, 9,920.66 and 1,683.36 is: 2,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.61 : 9,920.66 = 1,683.36 : x
  2. Step 2: Convert to fraction form
    6,613.61/9,920.66 = 1,683.36/x
  3. Step 3: Cross multiply
    6,613.61x = 9,920.66 × 1,683.36
  4. Step 4: Simplify right side
    6,613.61x = 16,700,033.80
  5. Step 5: Solve for x
    x = 16,700,033.80/6,613.61
  6. Step 6: Final answer
    x = 2,525.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.