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Finding the Fourth Proportional to 7,392.40, 10,203.96 and 4,409.20

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Solution

The fourth proportional to 7,392.40, 10,203.96 and 4,409.20 is: 6,086.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,392.40 : 10,203.96 = 4,409.20 : x
  2. Step 2: Convert to fraction form
    7,392.40/10,203.96 = 4,409.20/x
  3. Step 3: Cross multiply
    7,392.40x = 10,203.96 × 4,409.20
  4. Step 4: Simplify right side
    7,392.40x = 44,991,300.43
  5. Step 5: Solve for x
    x = 44,991,300.43/7,392.40
  6. Step 6: Final answer
    x = 6,086.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.