Home / 7,985.12-11,019.18-4,448.14

Finding the Fourth Proportional to 7,985.12, 11,019.18 and 4,448.14

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Solution

The fourth proportional to 7,985.12, 11,019.18 and 4,448.14 is: 6,138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.12 : 11,019.18 = 4,448.14 : x
  2. Step 2: Convert to fraction form
    7,985.12/11,019.18 = 4,448.14/x
  3. Step 3: Cross multiply
    7,985.12x = 11,019.18 × 4,448.14
  4. Step 4: Simplify right side
    7,985.12x = 49,014,855.33
  5. Step 5: Solve for x
    x = 49,014,855.33/7,985.12
  6. Step 6: Final answer
    x = 6,138.27

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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.