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Finding the Fourth Proportional to 4,751.25, 7,123.03 and 1,980.01

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Solution

The fourth proportional to 4,751.25, 7,123.03 and 1,980.01 is: 2,968.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751.25 : 7,123.03 = 1,980.01 : x
  2. Step 2: Convert to fraction form
    4,751.25/7,123.03 = 1,980.01/x
  3. Step 3: Cross multiply
    4,751.25x = 7,123.03 × 1,980.01
  4. Step 4: Simplify right side
    4,751.25x = 14,103,670.63
  5. Step 5: Solve for x
    x = 14,103,670.63/4,751.25
  6. Step 6: Final answer
    x = 2,968.41

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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.