Home / 7,140.97-9,845.35-4,618.63

Finding the Fourth Proportional to 7,140.97, 9,845.35 and 4,618.63

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Solution

The fourth proportional to 7,140.97, 9,845.35 and 4,618.63 is: 6,367.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.97 : 9,845.35 = 4,618.63 : x
  2. Step 2: Convert to fraction form
    7,140.97/9,845.35 = 4,618.63/x
  3. Step 3: Cross multiply
    7,140.97x = 9,845.35 × 4,618.63
  4. Step 4: Simplify right side
    7,140.97x = 45,472,028.87
  5. Step 5: Solve for x
    x = 45,472,028.87/7,140.97
  6. Step 6: Final answer
    x = 6,367.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.