Home / 8,605.40-12,909.45-3,675.06

Finding the Fourth Proportional to 8,605.40, 12,909.45 and 3,675.06

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Solution

The fourth proportional to 8,605.40, 12,909.45 and 3,675.06 is: 5,513.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.40 : 12,909.45 = 3,675.06 : x
  2. Step 2: Convert to fraction form
    8,605.40/12,909.45 = 3,675.06/x
  3. Step 3: Cross multiply
    8,605.40x = 12,909.45 × 3,675.06
  4. Step 4: Simplify right side
    8,605.40x = 47,443,003.32
  5. Step 5: Solve for x
    x = 47,443,003.32/8,605.40
  6. Step 6: Final answer
    x = 5,513.17

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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.