Home / 2,576.23-3,555.20-1,397.31

Finding the Fourth Proportional to 2,576.23, 3,555.20 and 1,397.31

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Solution

The fourth proportional to 2,576.23, 3,555.20 and 1,397.31 is: 1,928.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,576.23 : 3,555.20 = 1,397.31 : x
  2. Step 2: Convert to fraction form
    2,576.23/3,555.20 = 1,397.31/x
  3. Step 3: Cross multiply
    2,576.23x = 3,555.20 × 1,397.31
  4. Step 4: Simplify right side
    2,576.23x = 4,967,702.23
  5. Step 5: Solve for x
    x = 4,967,702.23/2,576.23
  6. Step 6: Final answer
    x = 1,928.28

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Half scale
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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.