Home / 1,395.24-2,093.20-421.29

Finding the Fourth Proportional to 1,395.24, 2,093.20 and 421.29

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Solution

The fourth proportional to 1,395.24, 2,093.20 and 421.29 is: 632.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.24 : 2,093.20 = 421.29 : x
  2. Step 2: Convert to fraction form
    1,395.24/2,093.20 = 421.29/x
  3. Step 3: Cross multiply
    1,395.24x = 2,093.20 × 421.29
  4. Step 4: Simplify right side
    1,395.24x = 881,833.76
  5. Step 5: Solve for x
    x = 881,833.76/1,395.24
  6. Step 6: Final answer
    x = 632.03

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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.