Home / 1,427.01-2,140.35-386.95

Finding the Fourth Proportional to 1,427.01, 2,140.35 and 386.95

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Solution

The fourth proportional to 1,427.01, 2,140.35 and 386.95 is: 580.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.01 : 2,140.35 = 386.95 : x
  2. Step 2: Convert to fraction form
    1,427.01/2,140.35 = 386.95/x
  3. Step 3: Cross multiply
    1,427.01x = 2,140.35 × 386.95
  4. Step 4: Simplify right side
    1,427.01x = 828,201.15
  5. Step 5: Solve for x
    x = 828,201.15/1,427.01
  6. Step 6: Final answer
    x = 580.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.