Home / 7,184.40-10,776.56-1,990.12

Finding the Fourth Proportional to 7,184.40, 10,776.56 and 1,990.12

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Solution

The fourth proportional to 7,184.40, 10,776.56 and 1,990.12 is: 2,985.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,184.40 : 10,776.56 = 1,990.12 : x
  2. Step 2: Convert to fraction form
    7,184.40/10,776.56 = 1,990.12/x
  3. Step 3: Cross multiply
    7,184.40x = 10,776.56 × 1,990.12
  4. Step 4: Simplify right side
    7,184.40x = 21,446,647.59
  5. Step 5: Solve for x
    x = 21,446,647.59/7,184.40
  6. Step 6: Final answer
    x = 2,985.17

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Half scale
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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.