Home / 10,511.75-15,767.72-2,720.09

Finding the Fourth Proportional to 10,511.75, 15,767.72 and 2,720.09

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Solution

The fourth proportional to 10,511.75, 15,767.72 and 2,720.09 is: 4,080.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.75 : 15,767.72 = 2,720.09 : x
  2. Step 2: Convert to fraction form
    10,511.75/15,767.72 = 2,720.09/x
  3. Step 3: Cross multiply
    10,511.75x = 15,767.72 × 2,720.09
  4. Step 4: Simplify right side
    10,511.75x = 42,889,617.49
  5. Step 5: Solve for x
    x = 42,889,617.49/10,511.75
  6. Step 6: Final answer
    x = 4,080.16

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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.