Home / 1,911.48-2,637.90-1,165.68

Finding the Fourth Proportional to 1,911.48, 2,637.90 and 1,165.68

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Solution

The fourth proportional to 1,911.48, 2,637.90 and 1,165.68 is: 1,608.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.48 : 2,637.90 = 1,165.68 : x
  2. Step 2: Convert to fraction form
    1,911.48/2,637.90 = 1,165.68/x
  3. Step 3: Cross multiply
    1,911.48x = 2,637.90 × 1,165.68
  4. Step 4: Simplify right side
    1,911.48x = 3,074,947.27
  5. Step 5: Solve for x
    x = 3,074,947.27/1,911.48
  6. Step 6: Final answer
    x = 1,608.67

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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.