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Finding the Fourth Proportional to 1,808.37, 2,495.54 and 980.37

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Solution

The fourth proportional to 1,808.37, 2,495.54 and 980.37 is: 1,352.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,808.37 : 2,495.54 = 980.37 : x
  2. Step 2: Convert to fraction form
    1,808.37/2,495.54 = 980.37/x
  3. Step 3: Cross multiply
    1,808.37x = 2,495.54 × 980.37
  4. Step 4: Simplify right side
    1,808.37x = 2,446,552.55
  5. Step 5: Solve for x
    x = 2,446,552.55/1,808.37
  6. Step 6: Final answer
    x = 1,352.90

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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.