Home / 2,779.40-3,831.82-1,782.95

Finding the Fourth Proportional to 2,779.40, 3,831.82 and 1,782.95

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Solution

The fourth proportional to 2,779.40, 3,831.82 and 1,782.95 is: 2,458.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.40 : 3,831.82 = 1,782.95 : x
  2. Step 2: Convert to fraction form
    2,779.40/3,831.82 = 1,782.95/x
  3. Step 3: Cross multiply
    2,779.40x = 3,831.82 × 1,782.95
  4. Step 4: Simplify right side
    2,779.40x = 6,831,915.40
  5. Step 5: Solve for x
    x = 6,831,915.40/2,779.40
  6. Step 6: Final answer
    x = 2,458.05

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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.