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Finding the Fourth Proportional to 4,879.85, 7,322.58 and 4,840.22

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Solution

The fourth proportional to 4,879.85, 7,322.58 and 4,840.22 is: 7,263.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.85 : 7,322.58 = 4,840.22 : x
  2. Step 2: Convert to fraction form
    4,879.85/7,322.58 = 4,840.22/x
  3. Step 3: Cross multiply
    4,879.85x = 7,322.58 × 4,840.22
  4. Step 4: Simplify right side
    4,879.85x = 35,442,916.47
  5. Step 5: Solve for x
    x = 35,442,916.47/4,879.85
  6. Step 6: Final answer
    x = 7,263.12

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1.5x scale

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.