Home / 2,576.77-3,555.85-1,397.81

Finding the Fourth Proportional to 2,576.77, 3,555.85 and 1,397.81

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Solution

The fourth proportional to 2,576.77, 3,555.85 and 1,397.81 is: 1,928.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,576.77 : 3,555.85 = 1,397.81 : x
  2. Step 2: Convert to fraction form
    2,576.77/3,555.85 = 1,397.81/x
  3. Step 3: Cross multiply
    2,576.77x = 3,555.85 × 1,397.81
  4. Step 4: Simplify right side
    2,576.77x = 4,970,408.08
  5. Step 5: Solve for x
    x = 4,970,408.08/2,576.77
  6. Step 6: Final answer
    x = 1,928.93

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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.