Home / 2,315.60-3,469.80-1,948.40

Finding the Fourth Proportional to 2,315.60, 3,469.80 and 1,948.40

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Solution

The fourth proportional to 2,315.60, 3,469.80 and 1,948.40 is: 2,919.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.60 : 3,469.80 = 1,948.40 : x
  2. Step 2: Convert to fraction form
    2,315.60/3,469.80 = 1,948.40/x
  3. Step 3: Cross multiply
    2,315.60x = 3,469.80 × 1,948.40
  4. Step 4: Simplify right side
    2,315.60x = 6,760,558.32
  5. Step 5: Solve for x
    x = 6,760,558.32/2,315.60
  6. Step 6: Final answer
    x = 2,919.57

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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.