Home / 2,699.42-4,042.53-1,915.65

Finding the Fourth Proportional to 2,699.42, 4,042.53 and 1,915.65

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Solution

The fourth proportional to 2,699.42, 4,042.53 and 1,915.65 is: 2,868.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.42 : 4,042.53 = 1,915.65 : x
  2. Step 2: Convert to fraction form
    2,699.42/4,042.53 = 1,915.65/x
  3. Step 3: Cross multiply
    2,699.42x = 4,042.53 × 1,915.65
  4. Step 4: Simplify right side
    2,699.42x = 7,744,072.59
  5. Step 5: Solve for x
    x = 7,744,072.59/2,699.42
  6. Step 6: Final answer
    x = 2,868.80

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1.5x scale

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.