Home / 1,911.46-2,637.78-1,125.34

Finding the Fourth Proportional to 1,911.46, 2,637.78 and 1,125.34

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Solution

The fourth proportional to 1,911.46, 2,637.78 and 1,125.34 is: 1,552.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.46 : 2,637.78 = 1,125.34 : x
  2. Step 2: Convert to fraction form
    1,911.46/2,637.78 = 1,125.34/x
  3. Step 3: Cross multiply
    1,911.46x = 2,637.78 × 1,125.34
  4. Step 4: Simplify right side
    1,911.46x = 2,968,399.35
  5. Step 5: Solve for x
    x = 2,968,399.35/1,911.46
  6. Step 6: Final answer
    x = 1,552.95

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1.5x scale

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.