Home / 2,215.01-3,056.85-1,220.28

Finding the Fourth Proportional to 2,215.01, 3,056.85 and 1,220.28

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Solution

The fourth proportional to 2,215.01, 3,056.85 and 1,220.28 is: 1,684.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.01 : 3,056.85 = 1,220.28 : x
  2. Step 2: Convert to fraction form
    2,215.01/3,056.85 = 1,220.28/x
  3. Step 3: Cross multiply
    2,215.01x = 3,056.85 × 1,220.28
  4. Step 4: Simplify right side
    2,215.01x = 3,730,223.24
  5. Step 5: Solve for x
    x = 3,730,223.24/2,215.01
  6. Step 6: Final answer
    x = 1,684.07

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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.