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Finding the Fourth Proportional to 3,653.58, 5,048.76 and 2,990.20

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Solution

The fourth proportional to 3,653.58, 5,048.76 and 2,990.20 is: 4,132.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.58 : 5,048.76 = 2,990.20 : x
  2. Step 2: Convert to fraction form
    3,653.58/5,048.76 = 2,990.20/x
  3. Step 3: Cross multiply
    3,653.58x = 5,048.76 × 2,990.20
  4. Step 4: Simplify right side
    3,653.58x = 15,096,802.15
  5. Step 5: Solve for x
    x = 15,096,802.15/3,653.58
  6. Step 6: Final answer
    x = 4,132.06

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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.