Home / 2,115.06-2,917.77-1,368.75

Finding the Fourth Proportional to 2,115.06, 2,917.77 and 1,368.75

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Solution

The fourth proportional to 2,115.06, 2,917.77 and 1,368.75 is: 1,888.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.06 : 2,917.77 = 1,368.75 : x
  2. Step 2: Convert to fraction form
    2,115.06/2,917.77 = 1,368.75/x
  3. Step 3: Cross multiply
    2,115.06x = 2,917.77 × 1,368.75
  4. Step 4: Simplify right side
    2,115.06x = 3,993,697.69
  5. Step 5: Solve for x
    x = 3,993,697.69/2,115.06
  6. Step 6: Final answer
    x = 1,888.22

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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.