Home / 1,894.24-2,615.70-1,187.30

Finding the Fourth Proportional to 1,894.24, 2,615.70 and 1,187.30

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Solution

The fourth proportional to 1,894.24, 2,615.70 and 1,187.30 is: 1,639.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894.24 : 2,615.70 = 1,187.30 : x
  2. Step 2: Convert to fraction form
    1,894.24/2,615.70 = 1,187.30/x
  3. Step 3: Cross multiply
    1,894.24x = 2,615.70 × 1,187.30
  4. Step 4: Simplify right side
    1,894.24x = 3,105,609.87
  5. Step 5: Solve for x
    x = 3,105,609.87/1,894.24
  6. Step 6: Final answer
    x = 1,639.50

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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.