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Finding the Fourth Proportional to 4,913.60, 7,380.16 and 2,969.60

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Solution

The fourth proportional to 4,913.60, 7,380.16 and 2,969.60 is: 4,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.60 : 7,380.16 = 2,969.60 : x
  2. Step 2: Convert to fraction form
    4,913.60/7,380.16 = 2,969.60/x
  3. Step 3: Cross multiply
    4,913.60x = 7,380.16 × 2,969.60
  4. Step 4: Simplify right side
    4,913.60x = 21,916,123.14
  5. Step 5: Solve for x
    x = 21,916,123.14/4,913.60
  6. Step 6: Final answer
    x = 4,460.30

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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.