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Finding the Fourth Proportional to 6,479.53, 9,668.74 and 5,781.40

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Solution

The fourth proportional to 6,479.53, 9,668.74 and 5,781.40 is: 8,626.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.53 : 9,668.74 = 5,781.40 : x
  2. Step 2: Convert to fraction form
    6,479.53/9,668.74 = 5,781.40/x
  3. Step 3: Cross multiply
    6,479.53x = 9,668.74 × 5,781.40
  4. Step 4: Simplify right side
    6,479.53x = 55,898,790.64
  5. Step 5: Solve for x
    x = 55,898,790.64/6,479.53
  6. Step 6: Final answer
    x = 8,626.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.