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Finding the Fourth Proportional to 3,085.19, 4,627.73 and 745.17

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Solution

The fourth proportional to 3,085.19, 4,627.73 and 745.17 is: 1,117.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.19 : 4,627.73 = 745.17 : x
  2. Step 2: Convert to fraction form
    3,085.19/4,627.73 = 745.17/x
  3. Step 3: Cross multiply
    3,085.19x = 4,627.73 × 745.17
  4. Step 4: Simplify right side
    3,085.19x = 3,448,447.43
  5. Step 5: Solve for x
    x = 3,448,447.43/3,085.19
  6. Step 6: Final answer
    x = 1,117.74

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1.5x scale

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.