Home / 5,705.59-7,873.85-3,187.69

Finding the Fourth Proportional to 5,705.59, 7,873.85 and 3,187.69

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Solution

The fourth proportional to 5,705.59, 7,873.85 and 3,187.69 is: 4,399.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,705.59 : 7,873.85 = 3,187.69 : x
  2. Step 2: Convert to fraction form
    5,705.59/7,873.85 = 3,187.69/x
  3. Step 3: Cross multiply
    5,705.59x = 7,873.85 × 3,187.69
  4. Step 4: Simplify right side
    5,705.59x = 25,099,392.91
  5. Step 5: Solve for x
    x = 25,099,392.91/5,705.59
  6. Step 6: Final answer
    x = 4,399.09

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Half scale
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Double scale
Find fourth proportional to 5,706.59, 7,875.23 and 3,188.69
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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.