Home / 5,783.81-7,981.67-3,131.19

Finding the Fourth Proportional to 5,783.81, 7,981.67 and 3,131.19

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Solution

The fourth proportional to 5,783.81, 7,981.67 and 3,131.19 is: 4,321.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,783.81 : 7,981.67 = 3,131.19 : x
  2. Step 2: Convert to fraction form
    5,783.81/7,981.67 = 3,131.19/x
  3. Step 3: Cross multiply
    5,783.81x = 7,981.67 × 3,131.19
  4. Step 4: Simplify right side
    5,783.81x = 24,992,133.12
  5. Step 5: Solve for x
    x = 24,992,133.12/5,783.81
  6. Step 6: Final answer
    x = 4,321.05

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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.