Home / 7,999.36-11,029.12-6,113.28

Finding the Fourth Proportional to 7,999.36, 11,029.12 and 6,113.28

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Solution

The fourth proportional to 7,999.36, 11,029.12 and 6,113.28 is: 8,428.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.36 : 11,029.12 = 6,113.28 : x
  2. Step 2: Convert to fraction form
    7,999.36/11,029.12 = 6,113.28/x
  3. Step 3: Cross multiply
    7,999.36x = 11,029.12 × 6,113.28
  4. Step 4: Simplify right side
    7,999.36x = 67,424,098.71
  5. Step 5: Solve for x
    x = 67,424,098.71/7,999.36
  6. Step 6: Final answer
    x = 8,428.69

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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.