Home / 8,072.10-11,139.36-4,928.29

Finding the Fourth Proportional to 8,072.10, 11,139.36 and 4,928.29

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Solution

The fourth proportional to 8,072.10, 11,139.36 and 4,928.29 is: 6,800.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072.10 : 11,139.36 = 4,928.29 : x
  2. Step 2: Convert to fraction form
    8,072.10/11,139.36 = 4,928.29/x
  3. Step 3: Cross multiply
    8,072.10x = 11,139.36 × 4,928.29
  4. Step 4: Simplify right side
    8,072.10x = 54,897,916.16
  5. Step 5: Solve for x
    x = 54,897,916.16/8,072.10
  6. Step 6: Final answer
    x = 6,800.95

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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.