Home / 1,086.35-1,629.50-437.06

Finding the Fourth Proportional to 1,086.35, 1,629.50 and 437.06

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Solution

The fourth proportional to 1,086.35, 1,629.50 and 437.06 is: 655.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.35 : 1,629.50 = 437.06 : x
  2. Step 2: Convert to fraction form
    1,086.35/1,629.50 = 437.06/x
  3. Step 3: Cross multiply
    1,086.35x = 1,629.50 × 437.06
  4. Step 4: Simplify right side
    1,086.35x = 712,193.62
  5. Step 5: Solve for x
    x = 712,193.62/1,086.35
  6. Step 6: Final answer
    x = 655.59

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Double scale
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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.