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Finding the Fourth Proportional to 5,820.88, 8,731.08 and 1,438.23

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Solution

The fourth proportional to 5,820.88, 8,731.08 and 1,438.23 is: 2,157.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,820.88 : 8,731.08 = 1,438.23 : x
  2. Step 2: Convert to fraction form
    5,820.88/8,731.08 = 1,438.23/x
  3. Step 3: Cross multiply
    5,820.88x = 8,731.08 × 1,438.23
  4. Step 4: Simplify right side
    5,820.88x = 12,557,301.19
  5. Step 5: Solve for x
    x = 12,557,301.19/5,820.88
  6. Step 6: Final answer
    x = 2,157.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.