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Finding the Fourth Proportional to 8,403.74, 12,601.22 and 2,479.84

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Solution

The fourth proportional to 8,403.74, 12,601.22 and 2,479.84 is: 3,718.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,403.74 : 12,601.22 = 2,479.84 : x
  2. Step 2: Convert to fraction form
    8,403.74/12,601.22 = 2,479.84/x
  3. Step 3: Cross multiply
    8,403.74x = 12,601.22 × 2,479.84
  4. Step 4: Simplify right side
    8,403.74x = 31,249,009.40
  5. Step 5: Solve for x
    x = 31,249,009.40/8,403.74
  6. Step 6: Final answer
    x = 3,718.46

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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.