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Finding the Fourth Proportional to 1,804.78, 2,489.70 and 1,175.67

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Solution

The fourth proportional to 1,804.78, 2,489.70 and 1,175.67 is: 1,621.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,804.78 : 2,489.70 = 1,175.67 : x
  2. Step 2: Convert to fraction form
    1,804.78/2,489.70 = 1,175.67/x
  3. Step 3: Cross multiply
    1,804.78x = 2,489.70 × 1,175.67
  4. Step 4: Simplify right side
    1,804.78x = 2,927,059.72
  5. Step 5: Solve for x
    x = 2,927,059.72/1,804.78
  6. Step 6: Final answer
    x = 1,621.84

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1.5x scale

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.