Home / 2,214.81-3,056.40-1,220.19

Finding the Fourth Proportional to 2,214.81, 3,056.40 and 1,220.19

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Solution

The fourth proportional to 2,214.81, 3,056.40 and 1,220.19 is: 1,683.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,214.81 : 3,056.40 = 1,220.19 : x
  2. Step 2: Convert to fraction form
    2,214.81/3,056.40 = 1,220.19/x
  3. Step 3: Cross multiply
    2,214.81x = 3,056.40 × 1,220.19
  4. Step 4: Simplify right side
    2,214.81x = 3,729,376.48
  5. Step 5: Solve for x
    x = 3,729,376.48/2,214.81
  6. Step 6: Final answer
    x = 1,683.83

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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.