Home / 1,581.73-2,186.16-1,188.07

Finding the Fourth Proportional to 1,581.73, 2,186.16 and 1,188.07

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Solution

The fourth proportional to 1,581.73, 2,186.16 and 1,188.07 is: 1,642.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.73 : 2,186.16 = 1,188.07 : x
  2. Step 2: Convert to fraction form
    1,581.73/2,186.16 = 1,188.07/x
  3. Step 3: Cross multiply
    1,581.73x = 2,186.16 × 1,188.07
  4. Step 4: Simplify right side
    1,581.73x = 2,597,311.11
  5. Step 5: Solve for x
    x = 2,597,311.11/1,581.73
  6. Step 6: Final answer
    x = 1,642.07

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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.