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Finding the Fourth Proportional to 7,999.99, 11,039.97 and 4,462.99

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Solution

The fourth proportional to 7,999.99, 11,039.97 and 4,462.99 is: 6,158.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.99 : 11,039.97 = 4,462.99 : x
  2. Step 2: Convert to fraction form
    7,999.99/11,039.97 = 4,462.99/x
  3. Step 3: Cross multiply
    7,999.99x = 11,039.97 × 4,462.99
  4. Step 4: Simplify right side
    7,999.99x = 49,271,275.71
  5. Step 5: Solve for x
    x = 49,271,275.71/7,999.99
  6. Step 6: Final answer
    x = 6,158.92

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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.