Home / 1,787.90-2,679.77-1,058.09

Finding the Fourth Proportional to 1,787.90, 2,679.77 and 1,058.09

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Solution

The fourth proportional to 1,787.90, 2,679.77 and 1,058.09 is: 1,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.90 : 2,679.77 = 1,058.09 : x
  2. Step 2: Convert to fraction form
    1,787.90/2,679.77 = 1,058.09/x
  3. Step 3: Cross multiply
    1,787.90x = 2,679.77 × 1,058.09
  4. Step 4: Simplify right side
    1,787.90x = 2,835,437.84
  5. Step 5: Solve for x
    x = 2,835,437.84/1,787.90
  6. Step 6: Final answer
    x = 1,585.90

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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.