Home / 1,763.80-2,433.78-977.85

Finding the Fourth Proportional to 1,763.80, 2,433.78 and 977.85

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Solution

The fourth proportional to 1,763.80, 2,433.78 and 977.85 is: 1,349.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.80 : 2,433.78 = 977.85 : x
  2. Step 2: Convert to fraction form
    1,763.80/2,433.78 = 977.85/x
  3. Step 3: Cross multiply
    1,763.80x = 2,433.78 × 977.85
  4. Step 4: Simplify right side
    1,763.80x = 2,379,871.77
  5. Step 5: Solve for x
    x = 2,379,871.77/1,763.80
  6. Step 6: Final answer
    x = 1,349.29

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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.