Home / 2,183.75-3,013.88-1,399.47

Finding the Fourth Proportional to 2,183.75, 3,013.88 and 1,399.47

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Solution

The fourth proportional to 2,183.75, 3,013.88 and 1,399.47 is: 1,931.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.75 : 3,013.88 = 1,399.47 : x
  2. Step 2: Convert to fraction form
    2,183.75/3,013.88 = 1,399.47/x
  3. Step 3: Cross multiply
    2,183.75x = 3,013.88 × 1,399.47
  4. Step 4: Simplify right side
    2,183.75x = 4,217,834.64
  5. Step 5: Solve for x
    x = 4,217,834.64/2,183.75
  6. Step 6: Final answer
    x = 1,931.46

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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.