Home / 1,551.11-2,140.54-887.92

Finding the Fourth Proportional to 1,551.11, 2,140.54 and 887.92

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Solution

The fourth proportional to 1,551.11, 2,140.54 and 887.92 is: 1,225.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.11 : 2,140.54 = 887.92 : x
  2. Step 2: Convert to fraction form
    1,551.11/2,140.54 = 887.92/x
  3. Step 3: Cross multiply
    1,551.11x = 2,140.54 × 887.92
  4. Step 4: Simplify right side
    1,551.11x = 1,900,620.71
  5. Step 5: Solve for x
    x = 1,900,620.71/1,551.11
  6. Step 6: Final answer
    x = 1,225.33

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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.