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Finding the Fourth Proportional to 1,751.75, 2,420.90 and 1,436.52

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Solution

The fourth proportional to 1,751.75, 2,420.90 and 1,436.52 is: 1,985.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.75 : 2,420.90 = 1,436.52 : x
  2. Step 2: Convert to fraction form
    1,751.75/2,420.90 = 1,436.52/x
  3. Step 3: Cross multiply
    1,751.75x = 2,420.90 × 1,436.52
  4. Step 4: Simplify right side
    1,751.75x = 3,477,671.27
  5. Step 5: Solve for x
    x = 3,477,671.27/1,751.75
  6. Step 6: Final answer
    x = 1,985.26

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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.