Home / 2,214.85-3,056.63-1,220.13

Finding the Fourth Proportional to 2,214.85, 3,056.63 and 1,220.13

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Solution

The fourth proportional to 2,214.85, 3,056.63 and 1,220.13 is: 1,683.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,214.85 : 3,056.63 = 1,220.13 : x
  2. Step 2: Convert to fraction form
    2,214.85/3,056.63 = 1,220.13/x
  3. Step 3: Cross multiply
    2,214.85x = 3,056.63 × 1,220.13
  4. Step 4: Simplify right side
    2,214.85x = 3,729,482.16
  5. Step 5: Solve for x
    x = 3,729,482.16/2,214.85
  6. Step 6: Final answer
    x = 1,683.85

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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.