Home / 1,309.50-1,963.35-579.06

Finding the Fourth Proportional to 1,309.50, 1,963.35 and 579.06

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Solution

The fourth proportional to 1,309.50, 1,963.35 and 579.06 is: 868.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309.50 : 1,963.35 = 579.06 : x
  2. Step 2: Convert to fraction form
    1,309.50/1,963.35 = 579.06/x
  3. Step 3: Cross multiply
    1,309.50x = 1,963.35 × 579.06
  4. Step 4: Simplify right side
    1,309.50x = 1,136,897.45
  5. Step 5: Solve for x
    x = 1,136,897.45/1,309.50
  6. Step 6: Final answer
    x = 868.19

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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.