Home / 4,228.70-6,343.05-1,307.90

Finding the Fourth Proportional to 4,228.70, 6,343.05 and 1,307.90

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Solution

The fourth proportional to 4,228.70, 6,343.05 and 1,307.90 is: 1,961.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,228.70 : 6,343.05 = 1,307.90 : x
  2. Step 2: Convert to fraction form
    4,228.70/6,343.05 = 1,307.90/x
  3. Step 3: Cross multiply
    4,228.70x = 6,343.05 × 1,307.90
  4. Step 4: Simplify right side
    4,228.70x = 8,296,075.10
  5. Step 5: Solve for x
    x = 8,296,075.10/4,228.70
  6. Step 6: Final answer
    x = 1,961.85

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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.