Home / 1,086.89-1,631.95-1,067.45

Finding the Fourth Proportional to 1,086.89, 1,631.95 and 1,067.45

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Solution

The fourth proportional to 1,086.89, 1,631.95 and 1,067.45 is: 1,602.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.89 : 1,631.95 = 1,067.45 : x
  2. Step 2: Convert to fraction form
    1,086.89/1,631.95 = 1,067.45/x
  3. Step 3: Cross multiply
    1,086.89x = 1,631.95 × 1,067.45
  4. Step 4: Simplify right side
    1,086.89x = 1,742,014.20
  5. Step 5: Solve for x
    x = 1,742,014.20/1,086.89
  6. Step 6: Final answer
    x = 1,602.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.