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Finding the Fourth Proportional to 4,840.40, 7,263 and 1,918.64

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Solution

The fourth proportional to 4,840.40, 7,263 and 1,918.64 is: 2,878.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,840.40 : 7,263 = 1,918.64 : x
  2. Step 2: Convert to fraction form
    4,840.40/7,263 = 1,918.64/x
  3. Step 3: Cross multiply
    4,840.40x = 7,263 × 1,918.64
  4. Step 4: Simplify right side
    4,840.40x = 13,935,082.32
  5. Step 5: Solve for x
    x = 13,935,082.32/4,840.40
  6. Step 6: Final answer
    x = 2,878.91

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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.