Home / 4,947.60-7,420.08-2,172.84

Finding the Fourth Proportional to 4,947.60, 7,420.08 and 2,172.84

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Solution

The fourth proportional to 4,947.60, 7,420.08 and 2,172.84 is: 3,258.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,947.60 : 7,420.08 = 2,172.84 : x
  2. Step 2: Convert to fraction form
    4,947.60/7,420.08 = 2,172.84/x
  3. Step 3: Cross multiply
    4,947.60x = 7,420.08 × 2,172.84
  4. Step 4: Simplify right side
    4,947.60x = 16,122,646.63
  5. Step 5: Solve for x
    x = 16,122,646.63/4,947.60
  6. Step 6: Final answer
    x = 3,258.68

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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.