Home / 1,421.51-1,960.49-923.77

Finding the Fourth Proportional to 1,421.51, 1,960.49 and 923.77

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Solution

The fourth proportional to 1,421.51, 1,960.49 and 923.77 is: 1,274.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.51 : 1,960.49 = 923.77 : x
  2. Step 2: Convert to fraction form
    1,421.51/1,960.49 = 923.77/x
  3. Step 3: Cross multiply
    1,421.51x = 1,960.49 × 923.77
  4. Step 4: Simplify right side
    1,421.51x = 1,811,027.43
  5. Step 5: Solve for x
    x = 1,811,027.43/1,421.51
  6. Step 6: Final answer
    x = 1,274.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.