Home / 7,184.90-10,777.32-1,990.76

Finding the Fourth Proportional to 7,184.90, 10,777.32 and 1,990.76

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Solution

The fourth proportional to 7,184.90, 10,777.32 and 1,990.76 is: 2,986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,184.90 : 10,777.32 = 1,990.76 : x
  2. Step 2: Convert to fraction form
    7,184.90/10,777.32 = 1,990.76/x
  3. Step 3: Cross multiply
    7,184.90x = 10,777.32 × 1,990.76
  4. Step 4: Simplify right side
    7,184.90x = 21,455,057.56
  5. Step 5: Solve for x
    x = 21,455,057.56/7,184.90
  6. Step 6: Final answer
    x = 2,986.13

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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.