Home / 1,805.90-2,491.20-1,059.35

Finding the Fourth Proportional to 1,805.90, 2,491.20 and 1,059.35

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Solution

The fourth proportional to 1,805.90, 2,491.20 and 1,059.35 is: 1,461.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805.90 : 2,491.20 = 1,059.35 : x
  2. Step 2: Convert to fraction form
    1,805.90/2,491.20 = 1,059.35/x
  3. Step 3: Cross multiply
    1,805.90x = 2,491.20 × 1,059.35
  4. Step 4: Simplify right side
    1,805.90x = 2,639,058.95
  5. Step 5: Solve for x
    x = 2,639,058.95/1,805.90
  6. Step 6: Final answer
    x = 1,461.36

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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.