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Finding the Fourth Proportional to 1,550.56, 2,137.80 and 1,130.56

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Solution

The fourth proportional to 1,550.56, 2,137.80 and 1,130.56 is: 1,558.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.56 : 2,137.80 = 1,130.56 : x
  2. Step 2: Convert to fraction form
    1,550.56/2,137.80 = 1,130.56/x
  3. Step 3: Cross multiply
    1,550.56x = 2,137.80 × 1,130.56
  4. Step 4: Simplify right side
    1,550.56x = 2,416,911.17
  5. Step 5: Solve for x
    x = 2,416,911.17/1,550.56
  6. Step 6: Final answer
    x = 1,558.73

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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.