Home / 1,426.12-2,138.76-603.94

Finding the Fourth Proportional to 1,426.12, 2,138.76 and 603.94

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Solution

The fourth proportional to 1,426.12, 2,138.76 and 603.94 is: 905.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.12 : 2,138.76 = 603.94 : x
  2. Step 2: Convert to fraction form
    1,426.12/2,138.76 = 603.94/x
  3. Step 3: Cross multiply
    1,426.12x = 2,138.76 × 603.94
  4. Step 4: Simplify right side
    1,426.12x = 1,291,682.71
  5. Step 5: Solve for x
    x = 1,291,682.71/1,426.12
  6. Step 6: Final answer
    x = 905.73

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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.