Home / 10,511.86-15,767.79-2,720.65

Finding the Fourth Proportional to 10,511.86, 15,767.79 and 2,720.65

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Solution

The fourth proportional to 10,511.86, 15,767.79 and 2,720.65 is: 4,080.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.86 : 15,767.79 = 2,720.65 : x
  2. Step 2: Convert to fraction form
    10,511.86/15,767.79 = 2,720.65/x
  3. Step 3: Cross multiply
    10,511.86x = 15,767.79 × 2,720.65
  4. Step 4: Simplify right side
    10,511.86x = 42,898,637.86
  5. Step 5: Solve for x
    x = 42,898,637.86/10,511.86
  6. Step 6: Final answer
    x = 4,080.98

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Double scale
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Similar ratio
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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.