Home / 7,913.30-11,870.57-2,648.33

Finding the Fourth Proportional to 7,913.30, 11,870.57 and 2,648.33

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Solution

The fourth proportional to 7,913.30, 11,870.57 and 2,648.33 is: 3,972.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.30 : 11,870.57 = 2,648.33 : x
  2. Step 2: Convert to fraction form
    7,913.30/11,870.57 = 2,648.33/x
  3. Step 3: Cross multiply
    7,913.30x = 11,870.57 × 2,648.33
  4. Step 4: Simplify right side
    7,913.30x = 31,437,163.53
  5. Step 5: Solve for x
    x = 31,437,163.53/7,913.30
  6. Step 6: Final answer
    x = 3,972.70

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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.