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Finding the Fourth Proportional to 8,603.95, 12,909.57 and 4,703.80

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Solution

The fourth proportional to 8,603.95, 12,909.57 and 4,703.80 is: 7,057.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.95 : 12,909.57 = 4,703.80 : x
  2. Step 2: Convert to fraction form
    8,603.95/12,909.57 = 4,703.80/x
  3. Step 3: Cross multiply
    8,603.95x = 12,909.57 × 4,703.80
  4. Step 4: Simplify right side
    8,603.95x = 60,724,035.37
  5. Step 5: Solve for x
    x = 60,724,035.37/8,603.95
  6. Step 6: Final answer
    x = 7,057.69

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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.