Home / 1,823.40-2,513.70-1,297.80

Finding the Fourth Proportional to 1,823.40, 2,513.70 and 1,297.80

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Solution

The fourth proportional to 1,823.40, 2,513.70 and 1,297.80 is: 1,789.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,823.40 : 2,513.70 = 1,297.80 : x
  2. Step 2: Convert to fraction form
    1,823.40/2,513.70 = 1,297.80/x
  3. Step 3: Cross multiply
    1,823.40x = 2,513.70 × 1,297.80
  4. Step 4: Simplify right side
    1,823.40x = 3,262,279.86
  5. Step 5: Solve for x
    x = 3,262,279.86/1,823.40
  6. Step 6: Final answer
    x = 1,789.12

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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.