Home / 1,431.40-2,147.30-701.02

Finding the Fourth Proportional to 1,431.40, 2,147.30 and 701.02

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Solution

The fourth proportional to 1,431.40, 2,147.30 and 701.02 is: 1,051.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.40 : 2,147.30 = 701.02 : x
  2. Step 2: Convert to fraction form
    1,431.40/2,147.30 = 701.02/x
  3. Step 3: Cross multiply
    1,431.40x = 2,147.30 × 701.02
  4. Step 4: Simplify right side
    1,431.40x = 1,505,300.25
  5. Step 5: Solve for x
    x = 1,505,300.25/1,431.40
  6. Step 6: Final answer
    x = 1,051.63

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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.