Home / 3,118.69-4,678.04-1,171.05

Finding the Fourth Proportional to 3,118.69, 4,678.04 and 1,171.05

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Solution

The fourth proportional to 3,118.69, 4,678.04 and 1,171.05 is: 1,756.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.69 : 4,678.04 = 1,171.05 : x
  2. Step 2: Convert to fraction form
    3,118.69/4,678.04 = 1,171.05/x
  3. Step 3: Cross multiply
    3,118.69x = 4,678.04 × 1,171.05
  4. Step 4: Simplify right side
    3,118.69x = 5,478,218.74
  5. Step 5: Solve for x
    x = 5,478,218.74/3,118.69
  6. Step 6: Final answer
    x = 1,756.58

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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.