Home / 1,423.35-2,135.13-383.35

Finding the Fourth Proportional to 1,423.35, 2,135.13 and 383.35

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Solution

The fourth proportional to 1,423.35, 2,135.13 and 383.35 is: 575.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.35 : 2,135.13 = 383.35 : x
  2. Step 2: Convert to fraction form
    1,423.35/2,135.13 = 383.35/x
  3. Step 3: Cross multiply
    1,423.35x = 2,135.13 × 383.35
  4. Step 4: Simplify right side
    1,423.35x = 818,502.09
  5. Step 5: Solve for x
    x = 818,502.09/1,423.35
  6. Step 6: Final answer
    x = 575.05

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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.