Home / 9,140.40-13,705.20-4,766.40

Finding the Fourth Proportional to 9,140.40, 13,705.20 and 4,766.40

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Solution

The fourth proportional to 9,140.40, 13,705.20 and 4,766.40 is: 7,146.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.40 : 13,705.20 = 4,766.40 : x
  2. Step 2: Convert to fraction form
    9,140.40/13,705.20 = 4,766.40/x
  3. Step 3: Cross multiply
    9,140.40x = 13,705.20 × 4,766.40
  4. Step 4: Simplify right side
    9,140.40x = 65,324,465.28
  5. Step 5: Solve for x
    x = 65,324,465.28/9,140.40
  6. Step 6: Final answer
    x = 7,146.78

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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.