Home / 1,616.37-2,231.09-1,397.67

Finding the Fourth Proportional to 1,616.37, 2,231.09 and 1,397.67

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Solution

The fourth proportional to 1,616.37, 2,231.09 and 1,397.67 is: 1,929.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,616.37 : 2,231.09 = 1,397.67 : x
  2. Step 2: Convert to fraction form
    1,616.37/2,231.09 = 1,397.67/x
  3. Step 3: Cross multiply
    1,616.37x = 2,231.09 × 1,397.67
  4. Step 4: Simplify right side
    1,616.37x = 3,118,320.57
  5. Step 5: Solve for x
    x = 3,118,320.57/1,616.37
  6. Step 6: Final answer
    x = 1,929.21

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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.