Home / 3,967.45-5,474.89-2,289.40

Finding the Fourth Proportional to 3,967.45, 5,474.89 and 2,289.40

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Solution

The fourth proportional to 3,967.45, 5,474.89 and 2,289.40 is: 3,159.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,967.45 : 5,474.89 = 2,289.40 : x
  2. Step 2: Convert to fraction form
    3,967.45/5,474.89 = 2,289.40/x
  3. Step 3: Cross multiply
    3,967.45x = 5,474.89 × 2,289.40
  4. Step 4: Simplify right side
    3,967.45x = 12,534,193.76
  5. Step 5: Solve for x
    x = 12,534,193.76/3,967.45
  6. Step 6: Final answer
    x = 3,159.26

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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.