Home / 2,748.42-4,121.09-1,187.45

Finding the Fourth Proportional to 2,748.42, 4,121.09 and 1,187.45

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Solution

The fourth proportional to 2,748.42, 4,121.09 and 1,187.45 is: 1,780.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.42 : 4,121.09 = 1,187.45 : x
  2. Step 2: Convert to fraction form
    2,748.42/4,121.09 = 1,187.45/x
  3. Step 3: Cross multiply
    2,748.42x = 4,121.09 × 1,187.45
  4. Step 4: Simplify right side
    2,748.42x = 4,893,569.50
  5. Step 5: Solve for x
    x = 4,893,569.50/2,748.42
  6. Step 6: Final answer
    x = 1,780.50

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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.