Home / 1,421.07-2,134.85-1,362.75

Finding the Fourth Proportional to 1,421.07, 2,134.85 and 1,362.75

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Solution

The fourth proportional to 1,421.07, 2,134.85 and 1,362.75 is: 2,047.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.07 : 2,134.85 = 1,362.75 : x
  2. Step 2: Convert to fraction form
    1,421.07/2,134.85 = 1,362.75/x
  3. Step 3: Cross multiply
    1,421.07x = 2,134.85 × 1,362.75
  4. Step 4: Simplify right side
    1,421.07x = 2,909,260.02
  5. Step 5: Solve for x
    x = 2,909,260.02/1,421.07
  6. Step 6: Final answer
    x = 2,047.23

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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.