Home / 1,140.26-1,708.74-619.82

Finding the Fourth Proportional to 1,140.26, 1,708.74 and 619.82

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Solution

The fourth proportional to 1,140.26, 1,708.74 and 619.82 is: 928.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.26 : 1,708.74 = 619.82 : x
  2. Step 2: Convert to fraction form
    1,140.26/1,708.74 = 619.82/x
  3. Step 3: Cross multiply
    1,140.26x = 1,708.74 × 619.82
  4. Step 4: Simplify right side
    1,140.26x = 1,059,111.23
  5. Step 5: Solve for x
    x = 1,059,111.23/1,140.26
  6. Step 6: Final answer
    x = 928.83

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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.