Home / 2,085.14-2,877.28-1,245.68

Finding the Fourth Proportional to 2,085.14, 2,877.28 and 1,245.68

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Solution

The fourth proportional to 2,085.14, 2,877.28 and 1,245.68 is: 1,718.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085.14 : 2,877.28 = 1,245.68 : x
  2. Step 2: Convert to fraction form
    2,085.14/2,877.28 = 1,245.68/x
  3. Step 3: Cross multiply
    2,085.14x = 2,877.28 × 1,245.68
  4. Step 4: Simplify right side
    2,085.14x = 3,584,152.65
  5. Step 5: Solve for x
    x = 3,584,152.65/2,085.14
  6. Step 6: Final answer
    x = 1,718.91

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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.