Home / 7,135.95-10,700.92-2,139.03

Finding the Fourth Proportional to 7,135.95, 10,700.92 and 2,139.03

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Solution

The fourth proportional to 7,135.95, 10,700.92 and 2,139.03 is: 3,207.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.95 : 10,700.92 = 2,139.03 : x
  2. Step 2: Convert to fraction form
    7,135.95/10,700.92 = 2,139.03/x
  3. Step 3: Cross multiply
    7,135.95x = 10,700.92 × 2,139.03
  4. Step 4: Simplify right side
    7,135.95x = 22,889,588.91
  5. Step 5: Solve for x
    x = 22,889,588.91/7,135.95
  6. Step 6: Final answer
    x = 3,207.64

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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.