Home / 1,858.79-2,784.21-1,395.87

Finding the Fourth Proportional to 1,858.79, 2,784.21 and 1,395.87

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Solution

The fourth proportional to 1,858.79, 2,784.21 and 1,395.87 is: 2,090.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.79 : 2,784.21 = 1,395.87 : x
  2. Step 2: Convert to fraction form
    1,858.79/2,784.21 = 1,395.87/x
  3. Step 3: Cross multiply
    1,858.79x = 2,784.21 × 1,395.87
  4. Step 4: Simplify right side
    1,858.79x = 3,886,395.21
  5. Step 5: Solve for x
    x = 3,886,395.21/1,858.79
  6. Step 6: Final answer
    x = 2,090.83

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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.