Home / 1,283.36-1,925.11-405.89

Finding the Fourth Proportional to 1,283.36, 1,925.11 and 405.89

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Solution

The fourth proportional to 1,283.36, 1,925.11 and 405.89 is: 608.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.36 : 1,925.11 = 405.89 : x
  2. Step 2: Convert to fraction form
    1,283.36/1,925.11 = 405.89/x
  3. Step 3: Cross multiply
    1,283.36x = 1,925.11 × 405.89
  4. Step 4: Simplify right side
    1,283.36x = 781,382.90
  5. Step 5: Solve for x
    x = 781,382.90/1,283.36
  6. Step 6: Final answer
    x = 608.86

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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.