Home / 1,858.12-2,787.06-559.60

Finding the Fourth Proportional to 1,858.12, 2,787.06 and 559.60

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Solution

The fourth proportional to 1,858.12, 2,787.06 and 559.60 is: 839.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.12 : 2,787.06 = 559.60 : x
  2. Step 2: Convert to fraction form
    1,858.12/2,787.06 = 559.60/x
  3. Step 3: Cross multiply
    1,858.12x = 2,787.06 × 559.60
  4. Step 4: Simplify right side
    1,858.12x = 1,559,638.78
  5. Step 5: Solve for x
    x = 1,559,638.78/1,858.12
  6. Step 6: Final answer
    x = 839.36

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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.