Home / 3,130.60-4,695.36-1,905.88

Finding the Fourth Proportional to 3,130.60, 4,695.36 and 1,905.88

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Solution

The fourth proportional to 3,130.60, 4,695.36 and 1,905.88 is: 2,858.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.60 : 4,695.36 = 1,905.88 : x
  2. Step 2: Convert to fraction form
    3,130.60/4,695.36 = 1,905.88/x
  3. Step 3: Cross multiply
    3,130.60x = 4,695.36 × 1,905.88
  4. Step 4: Simplify right side
    3,130.60x = 8,948,792.72
  5. Step 5: Solve for x
    x = 8,948,792.72/3,130.60
  6. Step 6: Final answer
    x = 2,858.49

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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.