Home / 2,897.18-3,998.06-1,638.19

Finding the Fourth Proportional to 2,897.18, 3,998.06 and 1,638.19

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Solution

The fourth proportional to 2,897.18, 3,998.06 and 1,638.19 is: 2,260.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,897.18 : 3,998.06 = 1,638.19 : x
  2. Step 2: Convert to fraction form
    2,897.18/3,998.06 = 1,638.19/x
  3. Step 3: Cross multiply
    2,897.18x = 3,998.06 × 1,638.19
  4. Step 4: Simplify right side
    2,897.18x = 6,549,576.01
  5. Step 5: Solve for x
    x = 6,549,576.01/2,897.18
  6. Step 6: Final answer
    x = 2,260.67

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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.