Home / 1,970.98-2,720.52-1,174.85

Finding the Fourth Proportional to 1,970.98, 2,720.52 and 1,174.85

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Solution

The fourth proportional to 1,970.98, 2,720.52 and 1,174.85 is: 1,621.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.98 : 2,720.52 = 1,174.85 : x
  2. Step 2: Convert to fraction form
    1,970.98/2,720.52 = 1,174.85/x
  3. Step 3: Cross multiply
    1,970.98x = 2,720.52 × 1,174.85
  4. Step 4: Simplify right side
    1,970.98x = 3,196,214.82
  5. Step 5: Solve for x
    x = 3,196,214.82/1,970.98
  6. Step 6: Final answer
    x = 1,621.63

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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.