Home / 1,550.60-2,140.19-887.83

Finding the Fourth Proportional to 1,550.60, 2,140.19 and 887.83

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Solution

The fourth proportional to 1,550.60, 2,140.19 and 887.83 is: 1,225.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.60 : 2,140.19 = 887.83 : x
  2. Step 2: Convert to fraction form
    1,550.60/2,140.19 = 887.83/x
  3. Step 3: Cross multiply
    1,550.60x = 2,140.19 × 887.83
  4. Step 4: Simplify right side
    1,550.60x = 1,900,124.89
  5. Step 5: Solve for x
    x = 1,900,124.89/1,550.60
  6. Step 6: Final answer
    x = 1,225.42

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Double scale
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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.