Home / 8,631.51-12,945.39-3,085.23

Finding the Fourth Proportional to 8,631.51, 12,945.39 and 3,085.23

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Solution

The fourth proportional to 8,631.51, 12,945.39 and 3,085.23 is: 4,627.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.51 : 12,945.39 = 3,085.23 : x
  2. Step 2: Convert to fraction form
    8,631.51/12,945.39 = 3,085.23/x
  3. Step 3: Cross multiply
    8,631.51x = 12,945.39 × 3,085.23
  4. Step 4: Simplify right side
    8,631.51x = 39,939,542.57
  5. Step 5: Solve for x
    x = 39,939,542.57/8,631.51
  6. Step 6: Final answer
    x = 4,627.18

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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.