Home / 4,120.43-6,180.53-1,931.60

Finding the Fourth Proportional to 4,120.43, 6,180.53 and 1,931.60

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Solution

The fourth proportional to 4,120.43, 6,180.53 and 1,931.60 is: 2,897.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.43 : 6,180.53 = 1,931.60 : x
  2. Step 2: Convert to fraction form
    4,120.43/6,180.53 = 1,931.60/x
  3. Step 3: Cross multiply
    4,120.43x = 6,180.53 × 1,931.60
  4. Step 4: Simplify right side
    4,120.43x = 11,938,271.19
  5. Step 5: Solve for x
    x = 11,938,271.19/4,120.43
  6. Step 6: Final answer
    x = 2,897.34

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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.