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Finding the Fourth Proportional to 8,605.41, 11,875.05 and 5,417.79

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Solution

The fourth proportional to 8,605.41, 11,875.05 and 5,417.79 is: 7,476.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.41 : 11,875.05 = 5,417.79 : x
  2. Step 2: Convert to fraction form
    8,605.41/11,875.05 = 5,417.79/x
  3. Step 3: Cross multiply
    8,605.41x = 11,875.05 × 5,417.79
  4. Step 4: Simplify right side
    8,605.41x = 64,336,527.14
  5. Step 5: Solve for x
    x = 64,336,527.14/8,605.41
  6. Step 6: Final answer
    x = 7,476.29

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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.