Home / 1,571.55-2,166.21-1,383.84

Finding the Fourth Proportional to 1,571.55, 2,166.21 and 1,383.84

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Solution

The fourth proportional to 1,571.55, 2,166.21 and 1,383.84 is: 1,907.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.55 : 2,166.21 = 1,383.84 : x
  2. Step 2: Convert to fraction form
    1,571.55/2,166.21 = 1,383.84/x
  3. Step 3: Cross multiply
    1,571.55x = 2,166.21 × 1,383.84
  4. Step 4: Simplify right side
    1,571.55x = 2,997,688.05
  5. Step 5: Solve for x
    x = 2,997,688.05/1,571.55
  6. Step 6: Final answer
    x = 1,907.47

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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.