Home / 3,591.09-5,386.64-1,125.90

Finding the Fourth Proportional to 3,591.09, 5,386.64 and 1,125.90

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Solution

The fourth proportional to 3,591.09, 5,386.64 and 1,125.90 is: 1,688.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.09 : 5,386.64 = 1,125.90 : x
  2. Step 2: Convert to fraction form
    3,591.09/5,386.64 = 1,125.90/x
  3. Step 3: Cross multiply
    3,591.09x = 5,386.64 × 1,125.90
  4. Step 4: Simplify right side
    3,591.09x = 6,064,812.35
  5. Step 5: Solve for x
    x = 6,064,812.35/3,591.09
  6. Step 6: Final answer
    x = 1,688.85

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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.