Home / 1,619.99-2,235.20-1,177.12

Finding the Fourth Proportional to 1,619.99, 2,235.20 and 1,177.12

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Solution

The fourth proportional to 1,619.99, 2,235.20 and 1,177.12 is: 1,624.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.99 : 2,235.20 = 1,177.12 : x
  2. Step 2: Convert to fraction form
    1,619.99/2,235.20 = 1,177.12/x
  3. Step 3: Cross multiply
    1,619.99x = 2,235.20 × 1,177.12
  4. Step 4: Simplify right side
    1,619.99x = 2,631,098.62
  5. Step 5: Solve for x
    x = 2,631,098.62/1,619.99
  6. Step 6: Final answer
    x = 1,624.14

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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.