Home / 1,282.96-1,911.20-1,203.28

Finding the Fourth Proportional to 1,282.96, 1,911.20 and 1,203.28

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Solution

The fourth proportional to 1,282.96, 1,911.20 and 1,203.28 is: 1,792.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.96 : 1,911.20 = 1,203.28 : x
  2. Step 2: Convert to fraction form
    1,282.96/1,911.20 = 1,203.28/x
  3. Step 3: Cross multiply
    1,282.96x = 1,911.20 × 1,203.28
  4. Step 4: Simplify right side
    1,282.96x = 2,299,708.74
  5. Step 5: Solve for x
    x = 2,299,708.74/1,282.96
  6. Step 6: Final answer
    x = 1,792.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.