Home / 1,603.50-2,211.04-1,315.17

Finding the Fourth Proportional to 1,603.50, 2,211.04 and 1,315.17

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Solution

The fourth proportional to 1,603.50, 2,211.04 and 1,315.17 is: 1,813.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.50 : 2,211.04 = 1,315.17 : x
  2. Step 2: Convert to fraction form
    1,603.50/2,211.04 = 1,315.17/x
  3. Step 3: Cross multiply
    1,603.50x = 2,211.04 × 1,315.17
  4. Step 4: Simplify right side
    1,603.50x = 2,907,893.48
  5. Step 5: Solve for x
    x = 2,907,893.48/1,603.50
  6. Step 6: Final answer
    x = 1,813.47

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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.