Home / 3,687.02-5,528.40-1,221.18

Finding the Fourth Proportional to 3,687.02, 5,528.40 and 1,221.18

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Solution

The fourth proportional to 3,687.02, 5,528.40 and 1,221.18 is: 1,831.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.02 : 5,528.40 = 1,221.18 : x
  2. Step 2: Convert to fraction form
    3,687.02/5,528.40 = 1,221.18/x
  3. Step 3: Cross multiply
    3,687.02x = 5,528.40 × 1,221.18
  4. Step 4: Simplify right side
    3,687.02x = 6,751,153.07
  5. Step 5: Solve for x
    x = 6,751,153.07/3,687.02
  6. Step 6: Final answer
    x = 1,831.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.