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Finding the Fourth Proportional to 4,956.40, 7,417.40 and 3,907.60

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Solution

The fourth proportional to 4,956.40, 7,417.40 and 3,907.60 is: 5,847.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,956.40 : 7,417.40 = 3,907.60 : x
  2. Step 2: Convert to fraction form
    4,956.40/7,417.40 = 3,907.60/x
  3. Step 3: Cross multiply
    4,956.40x = 7,417.40 × 3,907.60
  4. Step 4: Simplify right side
    4,956.40x = 28,984,232.24
  5. Step 5: Solve for x
    x = 28,984,232.24/4,956.40
  6. Step 6: Final answer
    x = 5,847.84

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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.