Home / 7,985.28-11,019.76-4,448.48

Finding the Fourth Proportional to 7,985.28, 11,019.76 and 4,448.48

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Solution

The fourth proportional to 7,985.28, 11,019.76 and 4,448.48 is: 6,138.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.28 : 11,019.76 = 4,448.48 : x
  2. Step 2: Convert to fraction form
    7,985.28/11,019.76 = 4,448.48/x
  3. Step 3: Cross multiply
    7,985.28x = 11,019.76 × 4,448.48
  4. Step 4: Simplify right side
    7,985.28x = 49,021,181.96
  5. Step 5: Solve for x
    x = 49,021,181.96/7,985.28
  6. Step 6: Final answer
    x = 6,138.94

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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.