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Finding the Fourth Proportional to 11,718.75, 17,578.13 and 3,510.75

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Solution

The fourth proportional to 11,718.75, 17,578.13 and 3,510.75 is: 5,266.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.75 : 17,578.13 = 3,510.75 : x
  2. Step 2: Convert to fraction form
    11,718.75/17,578.13 = 3,510.75/x
  3. Step 3: Cross multiply
    11,718.75x = 17,578.13 × 3,510.75
  4. Step 4: Simplify right side
    11,718.75x = 61,712,402.34
  5. Step 5: Solve for x
    x = 61,712,402.34/11,718.75
  6. Step 6: Final answer
    x = 5,266.13

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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.