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Finding the Fourth Proportional to 8,188.79, 11,299.16 and 4,650.71

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Solution

The fourth proportional to 8,188.79, 11,299.16 and 4,650.71 is: 6,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,188.79 : 11,299.16 = 4,650.71 : x
  2. Step 2: Convert to fraction form
    8,188.79/11,299.16 = 4,650.71/x
  3. Step 3: Cross multiply
    8,188.79x = 11,299.16 × 4,650.71
  4. Step 4: Simplify right side
    8,188.79x = 52,549,071.53
  5. Step 5: Solve for x
    x = 52,549,071.53/8,188.79
  6. Step 6: Final answer
    x = 6,417.20

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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.