Home / 1,858.64-2,788.05-1,313.25

Finding the Fourth Proportional to 1,858.64, 2,788.05 and 1,313.25

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Solution

The fourth proportional to 1,858.64, 2,788.05 and 1,313.25 is: 1,969.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.64 : 2,788.05 = 1,313.25 : x
  2. Step 2: Convert to fraction form
    1,858.64/2,788.05 = 1,313.25/x
  3. Step 3: Cross multiply
    1,858.64x = 2,788.05 × 1,313.25
  4. Step 4: Simplify right side
    1,858.64x = 3,661,406.66
  5. Step 5: Solve for x
    x = 3,661,406.66/1,858.64
  6. Step 6: Final answer
    x = 1,969.94

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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.