Home / 1,821.81-2,514.12-1,423.92

Finding the Fourth Proportional to 1,821.81, 2,514.12 and 1,423.92

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Solution

The fourth proportional to 1,821.81, 2,514.12 and 1,423.92 is: 1,965.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.81 : 2,514.12 = 1,423.92 : x
  2. Step 2: Convert to fraction form
    1,821.81/2,514.12 = 1,423.92/x
  3. Step 3: Cross multiply
    1,821.81x = 2,514.12 × 1,423.92
  4. Step 4: Simplify right side
    1,821.81x = 3,579,905.75
  5. Step 5: Solve for x
    x = 3,579,905.75/1,821.81
  6. Step 6: Final answer
    x = 1,965.03

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1.5x scale

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.