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Finding the Fourth Proportional to 8,605.50, 11,875.72 and 5,020.36

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Solution

The fourth proportional to 8,605.50, 11,875.72 and 5,020.36 is: 6,928.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.50 : 11,875.72 = 5,020.36 : x
  2. Step 2: Convert to fraction form
    8,605.50/11,875.72 = 5,020.36/x
  3. Step 3: Cross multiply
    8,605.50x = 11,875.72 × 5,020.36
  4. Step 4: Simplify right side
    8,605.50x = 59,620,389.66
  5. Step 5: Solve for x
    x = 59,620,389.66/8,605.50
  6. Step 6: Final answer
    x = 6,928.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.