Home / 2,214.90-3,056.46-1,220.10

Finding the Fourth Proportional to 2,214.90, 3,056.46 and 1,220.10

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Solution

The fourth proportional to 2,214.90, 3,056.46 and 1,220.10 is: 1,683.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,214.90 : 3,056.46 = 1,220.10 : x
  2. Step 2: Convert to fraction form
    2,214.90/3,056.46 = 1,220.10/x
  3. Step 3: Cross multiply
    2,214.90x = 3,056.46 × 1,220.10
  4. Step 4: Simplify right side
    2,214.90x = 3,729,186.85
  5. Step 5: Solve for x
    x = 3,729,186.85/2,214.90
  6. Step 6: Final answer
    x = 1,683.68

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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.