Home / 1,116.45-1,540.67-619.08

Finding the Fourth Proportional to 1,116.45, 1,540.67 and 619.08

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Solution

The fourth proportional to 1,116.45, 1,540.67 and 619.08 is: 854.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.45 : 1,540.67 = 619.08 : x
  2. Step 2: Convert to fraction form
    1,116.45/1,540.67 = 619.08/x
  3. Step 3: Cross multiply
    1,116.45x = 1,540.67 × 619.08
  4. Step 4: Simplify right side
    1,116.45x = 953,794.89
  5. Step 5: Solve for x
    x = 953,794.89/1,116.45
  6. Step 6: Final answer
    x = 854.31

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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.