Home / 2,768.76-3,821.40-1,590.12

Finding the Fourth Proportional to 2,768.76, 3,821.40 and 1,590.12

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Solution

The fourth proportional to 2,768.76, 3,821.40 and 1,590.12 is: 2,194.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.76 : 3,821.40 = 1,590.12 : x
  2. Step 2: Convert to fraction form
    2,768.76/3,821.40 = 1,590.12/x
  3. Step 3: Cross multiply
    2,768.76x = 3,821.40 × 1,590.12
  4. Step 4: Simplify right side
    2,768.76x = 6,076,484.57
  5. Step 5: Solve for x
    x = 6,076,484.57/2,768.76
  6. Step 6: Final answer
    x = 2,194.66

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Double scale
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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.