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Finding the Fourth Proportional to 11,875.79, 17,811.18 and 4,480.08

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Solution

The fourth proportional to 11,875.79, 17,811.18 and 4,480.08 is: 6,719.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,875.79 : 17,811.18 = 4,480.08 : x
  2. Step 2: Convert to fraction form
    11,875.79/17,811.18 = 4,480.08/x
  3. Step 3: Cross multiply
    11,875.79x = 17,811.18 × 4,480.08
  4. Step 4: Simplify right side
    11,875.79x = 79,795,511.29
  5. Step 5: Solve for x
    x = 79,795,511.29/11,875.79
  6. Step 6: Final answer
    x = 6,719.18

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1.5x scale

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.