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Finding the Fourth Proportional to 1,324.88, 1,826.21 and 899.37

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Solution

The fourth proportional to 1,324.88, 1,826.21 and 899.37 is: 1,239.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.88 : 1,826.21 = 899.37 : x
  2. Step 2: Convert to fraction form
    1,324.88/1,826.21 = 899.37/x
  3. Step 3: Cross multiply
    1,324.88x = 1,826.21 × 899.37
  4. Step 4: Simplify right side
    1,324.88x = 1,642,438.49
  5. Step 5: Solve for x
    x = 1,642,438.49/1,324.88
  6. Step 6: Final answer
    x = 1,239.69

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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.