Home / 1,580.73-2,182.86-1,187.07

Finding the Fourth Proportional to 1,580.73, 2,182.86 and 1,187.07

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Solution

The fourth proportional to 1,580.73, 2,182.86 and 1,187.07 is: 1,639.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.73 : 2,182.86 = 1,187.07 : x
  2. Step 2: Convert to fraction form
    1,580.73/2,182.86 = 1,187.07/x
  3. Step 3: Cross multiply
    1,580.73x = 2,182.86 × 1,187.07
  4. Step 4: Simplify right side
    1,580.73x = 2,591,207.62
  5. Step 5: Solve for x
    x = 2,591,207.62/1,580.73
  6. Step 6: Final answer
    x = 1,639.25

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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.