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Finding the Fourth Proportional to 8,435.72, 12,653.58 and 2,590.76

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Solution

The fourth proportional to 8,435.72, 12,653.58 and 2,590.76 is: 3,886.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,435.72 : 12,653.58 = 2,590.76 : x
  2. Step 2: Convert to fraction form
    8,435.72/12,653.58 = 2,590.76/x
  3. Step 3: Cross multiply
    8,435.72x = 12,653.58 × 2,590.76
  4. Step 4: Simplify right side
    8,435.72x = 32,782,388.92
  5. Step 5: Solve for x
    x = 32,782,388.92/8,435.72
  6. Step 6: Final answer
    x = 3,886.14

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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.