Home / 8,142.41-11,236.77-5,720.10

Finding the Fourth Proportional to 8,142.41, 11,236.77 and 5,720.10

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Solution

The fourth proportional to 8,142.41, 11,236.77 and 5,720.10 is: 7,893.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.41 : 11,236.77 = 5,720.10 : x
  2. Step 2: Convert to fraction form
    8,142.41/11,236.77 = 5,720.10/x
  3. Step 3: Cross multiply
    8,142.41x = 11,236.77 × 5,720.10
  4. Step 4: Simplify right side
    8,142.41x = 64,275,448.08
  5. Step 5: Solve for x
    x = 64,275,448.08/8,142.41
  6. Step 6: Final answer
    x = 7,893.91

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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.