Home / 2,183.15-3,011.13-1,386.74

Finding the Fourth Proportional to 2,183.15, 3,011.13 and 1,386.74

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Solution

The fourth proportional to 2,183.15, 3,011.13 and 1,386.74 is: 1,912.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.15 : 3,011.13 = 1,386.74 : x
  2. Step 2: Convert to fraction form
    2,183.15/3,011.13 = 1,386.74/x
  3. Step 3: Cross multiply
    2,183.15x = 3,011.13 × 1,386.74
  4. Step 4: Simplify right side
    2,183.15x = 4,175,639.36
  5. Step 5: Solve for x
    x = 4,175,639.36/2,183.15
  6. Step 6: Final answer
    x = 1,912.67

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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.