Home / 10,782.81-16,174.22-2,991.63

Finding the Fourth Proportional to 10,782.81, 16,174.22 and 2,991.63

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Solution

The fourth proportional to 10,782.81, 16,174.22 and 2,991.63 is: 4,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,782.81 : 16,174.22 = 2,991.63 : x
  2. Step 2: Convert to fraction form
    10,782.81/16,174.22 = 2,991.63/x
  3. Step 3: Cross multiply
    10,782.81x = 16,174.22 × 2,991.63
  4. Step 4: Simplify right side
    10,782.81x = 48,387,281.78
  5. Step 5: Solve for x
    x = 48,387,281.78/10,782.81
  6. Step 6: Final answer
    x = 4,487.45

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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.