Home / 1,427.98-2,151.72-1,270.84

Finding the Fourth Proportional to 1,427.98, 2,151.72 and 1,270.84

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Solution

The fourth proportional to 1,427.98, 2,151.72 and 1,270.84 is: 1,914.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.98 : 2,151.72 = 1,270.84 : x
  2. Step 2: Convert to fraction form
    1,427.98/2,151.72 = 1,270.84/x
  3. Step 3: Cross multiply
    1,427.98x = 2,151.72 × 1,270.84
  4. Step 4: Simplify right side
    1,427.98x = 2,734,491.84
  5. Step 5: Solve for x
    x = 2,734,491.84/1,427.98
  6. Step 6: Final answer
    x = 1,914.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.