Home / 1,550.90-2,140.08-887.54

Finding the Fourth Proportional to 1,550.90, 2,140.08 and 887.54

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Solution

The fourth proportional to 1,550.90, 2,140.08 and 887.54 is: 1,224.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.90 : 2,140.08 = 887.54 : x
  2. Step 2: Convert to fraction form
    1,550.90/2,140.08 = 887.54/x
  3. Step 3: Cross multiply
    1,550.90x = 2,140.08 × 887.54
  4. Step 4: Simplify right side
    1,550.90x = 1,899,406.60
  5. Step 5: Solve for x
    x = 1,899,406.60/1,550.90
  6. Step 6: Final answer
    x = 1,224.71

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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.