Home / 8,428.30-12,641.46-5,299.07

Finding the Fourth Proportional to 8,428.30, 12,641.46 and 5,299.07

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Solution

The fourth proportional to 8,428.30, 12,641.46 and 5,299.07 is: 7,947.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.30 : 12,641.46 = 5,299.07 : x
  2. Step 2: Convert to fraction form
    8,428.30/12,641.46 = 5,299.07/x
  3. Step 3: Cross multiply
    8,428.30x = 12,641.46 × 5,299.07
  4. Step 4: Simplify right side
    8,428.30x = 66,987,918.23
  5. Step 5: Solve for x
    x = 66,987,918.23/8,428.30
  6. Step 6: Final answer
    x = 7,947.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.