Home / 1,550.81-2,140.16-887.87

Finding the Fourth Proportional to 1,550.81, 2,140.16 and 887.87

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Solution

The fourth proportional to 1,550.81, 2,140.16 and 887.87 is: 1,225.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.81 : 2,140.16 = 887.87 : x
  2. Step 2: Convert to fraction form
    1,550.81/2,140.16 = 887.87/x
  3. Step 3: Cross multiply
    1,550.81x = 2,140.16 × 887.87
  4. Step 4: Simplify right side
    1,550.81x = 1,900,168.72
  5. Step 5: Solve for x
    x = 1,900,168.72/1,550.81
  6. Step 6: Final answer
    x = 1,225.28

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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.