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Finding the Fourth Proportional to 3,591.55, 5,386.55 and 1,126.05

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Solution

The fourth proportional to 3,591.55, 5,386.55 and 1,126.05 is: 1,688.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.55 : 5,386.55 = 1,126.05 : x
  2. Step 2: Convert to fraction form
    3,591.55/5,386.55 = 1,126.05/x
  3. Step 3: Cross multiply
    3,591.55x = 5,386.55 × 1,126.05
  4. Step 4: Simplify right side
    3,591.55x = 6,065,524.63
  5. Step 5: Solve for x
    x = 6,065,524.63/3,591.55
  6. Step 6: Final answer
    x = 1,688.83

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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.