Home / 1,911.16-2,637.31-1,125.16

Finding the Fourth Proportional to 1,911.16, 2,637.31 and 1,125.16

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Solution

The fourth proportional to 1,911.16, 2,637.31 and 1,125.16 is: 1,552.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.16 : 2,637.31 = 1,125.16 : x
  2. Step 2: Convert to fraction form
    1,911.16/2,637.31 = 1,125.16/x
  3. Step 3: Cross multiply
    1,911.16x = 2,637.31 × 1,125.16
  4. Step 4: Simplify right side
    1,911.16x = 2,967,376.91
  5. Step 5: Solve for x
    x = 2,967,376.91/1,911.16
  6. Step 6: Final answer
    x = 1,552.66

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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.