Home / 2,215.02-3,056.79-1,220.24

Finding the Fourth Proportional to 2,215.02, 3,056.79 and 1,220.24

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Solution

The fourth proportional to 2,215.02, 3,056.79 and 1,220.24 is: 1,683.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.02 : 3,056.79 = 1,220.24 : x
  2. Step 2: Convert to fraction form
    2,215.02/3,056.79 = 1,220.24/x
  3. Step 3: Cross multiply
    2,215.02x = 3,056.79 × 1,220.24
  4. Step 4: Simplify right side
    2,215.02x = 3,730,014.19
  5. Step 5: Solve for x
    x = 3,730,014.19/2,215.02
  6. Step 6: Final answer
    x = 1,683.96

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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.