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Finding the Fourth Proportional to 8,642.45, 11,926.61 and 4,865.67

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Solution

The fourth proportional to 8,642.45, 11,926.61 and 4,865.67 is: 6,714.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.45 : 11,926.61 = 4,865.67 : x
  2. Step 2: Convert to fraction form
    8,642.45/11,926.61 = 4,865.67/x
  3. Step 3: Cross multiply
    8,642.45x = 11,926.61 × 4,865.67
  4. Step 4: Simplify right side
    8,642.45x = 58,030,924.15
  5. Step 5: Solve for x
    x = 58,030,924.15/8,642.45
  6. Step 6: Final answer
    x = 6,714.64

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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.