Home / 7,171.20-10,756.71-1,977.03

Finding the Fourth Proportional to 7,171.20, 10,756.71 and 1,977.03

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Solution

The fourth proportional to 7,171.20, 10,756.71 and 1,977.03 is: 2,965.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171.20 : 10,756.71 = 1,977.03 : x
  2. Step 2: Convert to fraction form
    7,171.20/10,756.71 = 1,977.03/x
  3. Step 3: Cross multiply
    7,171.20x = 10,756.71 × 1,977.03
  4. Step 4: Simplify right side
    7,171.20x = 21,266,338.37
  5. Step 5: Solve for x
    x = 21,266,338.37/7,171.20
  6. Step 6: Final answer
    x = 2,965.52

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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.