Home / 7,985.21-11,018.68-4,627.33

Finding the Fourth Proportional to 7,985.21, 11,018.68 and 4,627.33

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Solution

The fourth proportional to 7,985.21, 11,018.68 and 4,627.33 is: 6,385.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.21 : 11,018.68 = 4,627.33 : x
  2. Step 2: Convert to fraction form
    7,985.21/11,018.68 = 4,627.33/x
  3. Step 3: Cross multiply
    7,985.21x = 11,018.68 × 4,627.33
  4. Step 4: Simplify right side
    7,985.21x = 50,987,055.44
  5. Step 5: Solve for x
    x = 50,987,055.44/7,985.21
  6. Step 6: Final answer
    x = 6,385.19

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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.