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Finding the Fourth Proportional to 8,703.12, 13,050.39 and 3,155.63

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Solution

The fourth proportional to 8,703.12, 13,050.39 and 3,155.63 is: 4,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.12 : 13,050.39 = 3,155.63 : x
  2. Step 2: Convert to fraction form
    8,703.12/13,050.39 = 3,155.63/x
  3. Step 3: Cross multiply
    8,703.12x = 13,050.39 × 3,155.63
  4. Step 4: Simplify right side
    8,703.12x = 41,182,234.82
  5. Step 5: Solve for x
    x = 41,182,234.82/8,703.12
  6. Step 6: Final answer
    x = 4,731.89

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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.