Home / 3,612.74-5,419.10-1,420.27

Finding the Fourth Proportional to 3,612.74, 5,419.10 and 1,420.27

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Solution

The fourth proportional to 3,612.74, 5,419.10 and 1,420.27 is: 2,130.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.74 : 5,419.10 = 1,420.27 : x
  2. Step 2: Convert to fraction form
    3,612.74/5,419.10 = 1,420.27/x
  3. Step 3: Cross multiply
    3,612.74x = 5,419.10 × 1,420.27
  4. Step 4: Simplify right side
    3,612.74x = 7,696,575.16
  5. Step 5: Solve for x
    x = 7,696,575.16/3,612.74
  6. Step 6: Final answer
    x = 2,130.40

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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.