Home / 8,713.04-13,069.80-2,139.20

Finding the Fourth Proportional to 8,713.04, 13,069.80 and 2,139.20

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Solution

The fourth proportional to 8,713.04, 13,069.80 and 2,139.20 is: 3,208.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,713.04 : 13,069.80 = 2,139.20 : x
  2. Step 2: Convert to fraction form
    8,713.04/13,069.80 = 2,139.20/x
  3. Step 3: Cross multiply
    8,713.04x = 13,069.80 × 2,139.20
  4. Step 4: Simplify right side
    8,713.04x = 27,958,916.16
  5. Step 5: Solve for x
    x = 27,958,916.16/8,713.04
  6. Step 6: Final answer
    x = 3,208.86

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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.