Home / 1,143.30-1,577.75-619.34

Finding the Fourth Proportional to 1,143.30, 1,577.75 and 619.34

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Solution

The fourth proportional to 1,143.30, 1,577.75 and 619.34 is: 854.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.30 : 1,577.75 = 619.34 : x
  2. Step 2: Convert to fraction form
    1,143.30/1,577.75 = 619.34/x
  3. Step 3: Cross multiply
    1,143.30x = 1,577.75 × 619.34
  4. Step 4: Simplify right side
    1,143.30x = 977,152.70
  5. Step 5: Solve for x
    x = 977,152.70/1,143.30
  6. Step 6: Final answer
    x = 854.68

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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.