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Finding the Fourth Proportional to 7,245.60, 10,868.40 and 3,548.40

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Solution

The fourth proportional to 7,245.60, 10,868.40 and 3,548.40 is: 5,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,245.60 : 10,868.40 = 3,548.40 : x
  2. Step 2: Convert to fraction form
    7,245.60/10,868.40 = 3,548.40/x
  3. Step 3: Cross multiply
    7,245.60x = 10,868.40 × 3,548.40
  4. Step 4: Simplify right side
    7,245.60x = 38,565,430.56
  5. Step 5: Solve for x
    x = 38,565,430.56/7,245.60
  6. Step 6: Final answer
    x = 5,322.60

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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.