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Finding the Fourth Proportional to 2,085.60, 3,123.60 and 2,037.60

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Solution

The fourth proportional to 2,085.60, 3,123.60 and 2,037.60 is: 3,051.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085.60 : 3,123.60 = 2,037.60 : x
  2. Step 2: Convert to fraction form
    2,085.60/3,123.60 = 2,037.60/x
  3. Step 3: Cross multiply
    2,085.60x = 3,123.60 × 2,037.60
  4. Step 4: Simplify right side
    2,085.60x = 6,364,647.36
  5. Step 5: Solve for x
    x = 6,364,647.36/2,085.60
  6. Step 6: Final answer
    x = 3,051.71

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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.