Home / 6,922.37-10,381.38-1,990.68

Finding the Fourth Proportional to 6,922.37, 10,381.38 and 1,990.68

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Solution

The fourth proportional to 6,922.37, 10,381.38 and 1,990.68 is: 2,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,922.37 : 10,381.38 = 1,990.68 : x
  2. Step 2: Convert to fraction form
    6,922.37/10,381.38 = 1,990.68/x
  3. Step 3: Cross multiply
    6,922.37x = 10,381.38 × 1,990.68
  4. Step 4: Simplify right side
    6,922.37x = 20,666,005.54
  5. Step 5: Solve for x
    x = 20,666,005.54/6,922.37
  6. Step 6: Final answer
    x = 2,985.40

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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.