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Finding the Fourth Proportional to 8,479.41, 12,717.54 and 3,547.74

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Solution

The fourth proportional to 8,479.41, 12,717.54 and 3,547.74 is: 5,320.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.41 : 12,717.54 = 3,547.74 : x
  2. Step 2: Convert to fraction form
    8,479.41/12,717.54 = 3,547.74/x
  3. Step 3: Cross multiply
    8,479.41x = 12,717.54 × 3,547.74
  4. Step 4: Simplify right side
    8,479.41x = 45,118,525.36
  5. Step 5: Solve for x
    x = 45,118,525.36/8,479.41
  6. Step 6: Final answer
    x = 5,320.95

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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.