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Finding the Fourth Proportional to 2,970.48, 4,450.80 and 2,100.48

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Solution

The fourth proportional to 2,970.48, 4,450.80 and 2,100.48 is: 3,147.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.48 : 4,450.80 = 2,100.48 : x
  2. Step 2: Convert to fraction form
    2,970.48/4,450.80 = 2,100.48/x
  3. Step 3: Cross multiply
    2,970.48x = 4,450.80 × 2,100.48
  4. Step 4: Simplify right side
    2,970.48x = 9,348,816.38
  5. Step 5: Solve for x
    x = 9,348,816.38/2,970.48
  6. Step 6: Final answer
    x = 3,147.24

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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.