Home / 2,164.39-2,987.19-1,368.37

Finding the Fourth Proportional to 2,164.39, 2,987.19 and 1,368.37

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Solution

The fourth proportional to 2,164.39, 2,987.19 and 1,368.37 is: 1,888.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,164.39 : 2,987.19 = 1,368.37 : x
  2. Step 2: Convert to fraction form
    2,164.39/2,987.19 = 1,368.37/x
  3. Step 3: Cross multiply
    2,164.39x = 2,987.19 × 1,368.37
  4. Step 4: Simplify right side
    2,164.39x = 4,087,581.18
  5. Step 5: Solve for x
    x = 4,087,581.18/2,164.39
  6. Step 6: Final answer
    x = 1,888.56

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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.