Home / 1,427.14-1,968.60-1,240.30

Finding the Fourth Proportional to 1,427.14, 1,968.60 and 1,240.30

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Solution

The fourth proportional to 1,427.14, 1,968.60 and 1,240.30 is: 1,710.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.14 : 1,968.60 = 1,240.30 : x
  2. Step 2: Convert to fraction form
    1,427.14/1,968.60 = 1,240.30/x
  3. Step 3: Cross multiply
    1,427.14x = 1,968.60 × 1,240.30
  4. Step 4: Simplify right side
    1,427.14x = 2,441,654.58
  5. Step 5: Solve for x
    x = 2,441,654.58/1,427.14
  6. Step 6: Final answer
    x = 1,710.87

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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.