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Finding the Fourth Proportional to 8,603.45, 12,908.82 and 4,703.30

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Solution

The fourth proportional to 8,603.45, 12,908.82 and 4,703.30 is: 7,056.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.45 : 12,908.82 = 4,703.30 : x
  2. Step 2: Convert to fraction form
    8,603.45/12,908.82 = 4,703.30/x
  3. Step 3: Cross multiply
    8,603.45x = 12,908.82 × 4,703.30
  4. Step 4: Simplify right side
    8,603.45x = 60,714,053.11
  5. Step 5: Solve for x
    x = 60,714,053.11/8,603.45
  6. Step 6: Final answer
    x = 7,056.94

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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.