Home / 1,182.28-1,632.34-919.88

Finding the Fourth Proportional to 1,182.28, 1,632.34 and 919.88

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Solution

The fourth proportional to 1,182.28, 1,632.34 and 919.88 is: 1,270.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.28 : 1,632.34 = 919.88 : x
  2. Step 2: Convert to fraction form
    1,182.28/1,632.34 = 919.88/x
  3. Step 3: Cross multiply
    1,182.28x = 1,632.34 × 919.88
  4. Step 4: Simplify right side
    1,182.28x = 1,501,556.92
  5. Step 5: Solve for x
    x = 1,501,556.92/1,182.28
  6. Step 6: Final answer
    x = 1,270.05

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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.