Home / 8,621.90-11,899.32-5,085.44

Finding the Fourth Proportional to 8,621.90, 11,899.32 and 5,085.44

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Solution

The fourth proportional to 8,621.90, 11,899.32 and 5,085.44 is: 7,018.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.90 : 11,899.32 = 5,085.44 : x
  2. Step 2: Convert to fraction form
    8,621.90/11,899.32 = 5,085.44/x
  3. Step 3: Cross multiply
    8,621.90x = 11,899.32 × 5,085.44
  4. Step 4: Simplify right side
    8,621.90x = 60,513,277.90
  5. Step 5: Solve for x
    x = 60,513,277.90/8,621.90
  6. Step 6: Final answer
    x = 7,018.55

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1.5x scale

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.