Home / 2,390.42-3,299.83-1,860.76

Finding the Fourth Proportional to 2,390.42, 3,299.83 and 1,860.76

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Solution

The fourth proportional to 2,390.42, 3,299.83 and 1,860.76 is: 2,568.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.42 : 3,299.83 = 1,860.76 : x
  2. Step 2: Convert to fraction form
    2,390.42/3,299.83 = 1,860.76/x
  3. Step 3: Cross multiply
    2,390.42x = 3,299.83 × 1,860.76
  4. Step 4: Simplify right side
    2,390.42x = 6,140,191.14
  5. Step 5: Solve for x
    x = 6,140,191.14/2,390.42
  6. Step 6: Final answer
    x = 2,568.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.