Home / 5,154.22-7,731.89-1,643.40

Finding the Fourth Proportional to 5,154.22, 7,731.89 and 1,643.40

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Solution

The fourth proportional to 5,154.22, 7,731.89 and 1,643.40 is: 2,465.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,154.22 : 7,731.89 = 1,643.40 : x
  2. Step 2: Convert to fraction form
    5,154.22/7,731.89 = 1,643.40/x
  3. Step 3: Cross multiply
    5,154.22x = 7,731.89 × 1,643.40
  4. Step 4: Simplify right side
    5,154.22x = 12,706,588.03
  5. Step 5: Solve for x
    x = 12,706,588.03/5,154.22
  6. Step 6: Final answer
    x = 2,465.28

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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.