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Finding the Fourth Proportional to 2,187.81, 3,019.07 and 1,303.59

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Solution

The fourth proportional to 2,187.81, 3,019.07 and 1,303.59 is: 1,798.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.81 : 3,019.07 = 1,303.59 : x
  2. Step 2: Convert to fraction form
    2,187.81/3,019.07 = 1,303.59/x
  3. Step 3: Cross multiply
    2,187.81x = 3,019.07 × 1,303.59
  4. Step 4: Simplify right side
    2,187.81x = 3,935,644.04
  5. Step 5: Solve for x
    x = 3,935,644.04/2,187.81
  6. Step 6: Final answer
    x = 1,798.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.