Home / 7,021.87-10,530.99-2,090.20

Finding the Fourth Proportional to 7,021.87, 10,530.99 and 2,090.20

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Solution

The fourth proportional to 7,021.87, 10,530.99 and 2,090.20 is: 3,134.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.87 : 10,530.99 = 2,090.20 : x
  2. Step 2: Convert to fraction form
    7,021.87/10,530.99 = 2,090.20/x
  3. Step 3: Cross multiply
    7,021.87x = 10,530.99 × 2,090.20
  4. Step 4: Simplify right side
    7,021.87x = 22,011,875.30
  5. Step 5: Solve for x
    x = 22,011,875.30/7,021.87
  6. Step 6: Final answer
    x = 3,134.76

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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.