Home / 8,718.82-12,033.72-5,181.35

Finding the Fourth Proportional to 8,718.82, 12,033.72 and 5,181.35

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Solution

The fourth proportional to 8,718.82, 12,033.72 and 5,181.35 is: 7,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.82 : 12,033.72 = 5,181.35 : x
  2. Step 2: Convert to fraction form
    8,718.82/12,033.72 = 5,181.35/x
  3. Step 3: Cross multiply
    8,718.82x = 12,033.72 × 5,181.35
  4. Step 4: Simplify right side
    8,718.82x = 62,350,915.12
  5. Step 5: Solve for x
    x = 62,350,915.12/8,718.82
  6. Step 6: Final answer
    x = 7,151.30

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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.