Home / 7,115.19-9,818.99-4,131.15

Finding the Fourth Proportional to 7,115.19, 9,818.99 and 4,131.15

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Solution

The fourth proportional to 7,115.19, 9,818.99 and 4,131.15 is: 5,701.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.19 : 9,818.99 = 4,131.15 : x
  2. Step 2: Convert to fraction form
    7,115.19/9,818.99 = 4,131.15/x
  3. Step 3: Cross multiply
    7,115.19x = 9,818.99 × 4,131.15
  4. Step 4: Simplify right side
    7,115.19x = 40,563,720.54
  5. Step 5: Solve for x
    x = 40,563,720.54/7,115.19
  6. Step 6: Final answer
    x = 5,701.00

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Half scale
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Double scale
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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.