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Finding the Fourth Proportional to 3,150.40, 4,718.40 and 1,854.40

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Solution

The fourth proportional to 3,150.40, 4,718.40 and 1,854.40 is: 2,777.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.40 : 4,718.40 = 1,854.40 : x
  2. Step 2: Convert to fraction form
    3,150.40/4,718.40 = 1,854.40/x
  3. Step 3: Cross multiply
    3,150.40x = 4,718.40 × 1,854.40
  4. Step 4: Simplify right side
    3,150.40x = 8,749,800.96
  5. Step 5: Solve for x
    x = 8,749,800.96/3,150.40
  6. Step 6: Final answer
    x = 2,777.36

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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.