Home / 8,570.73-12,857.70-3,891.06

Finding the Fourth Proportional to 8,570.73, 12,857.70 and 3,891.06

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Solution

The fourth proportional to 8,570.73, 12,857.70 and 3,891.06 is: 5,837.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,570.73 : 12,857.70 = 3,891.06 : x
  2. Step 2: Convert to fraction form
    8,570.73/12,857.70 = 3,891.06/x
  3. Step 3: Cross multiply
    8,570.73x = 12,857.70 × 3,891.06
  4. Step 4: Simplify right side
    8,570.73x = 50,030,062.71
  5. Step 5: Solve for x
    x = 50,030,062.71/8,570.73
  6. Step 6: Final answer
    x = 5,837.32

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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.