Home / 5,554.94-7,655.26-3,980.30

Finding the Fourth Proportional to 5,554.94, 7,655.26 and 3,980.30

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Solution

The fourth proportional to 5,554.94, 7,655.26 and 3,980.30 is: 5,485.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,554.94 : 7,655.26 = 3,980.30 : x
  2. Step 2: Convert to fraction form
    5,554.94/7,655.26 = 3,980.30/x
  3. Step 3: Cross multiply
    5,554.94x = 7,655.26 × 3,980.30
  4. Step 4: Simplify right side
    5,554.94x = 30,470,231.38
  5. Step 5: Solve for x
    x = 30,470,231.38/5,554.94
  6. Step 6: Final answer
    x = 5,485.25

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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.