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Finding the Fourth Proportional to 7,275.88, 10,903.40 and 4,149.40

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Solution

The fourth proportional to 7,275.88, 10,903.40 and 4,149.40 is: 6,218.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,275.88 : 10,903.40 = 4,149.40 : x
  2. Step 2: Convert to fraction form
    7,275.88/10,903.40 = 4,149.40/x
  3. Step 3: Cross multiply
    7,275.88x = 10,903.40 × 4,149.40
  4. Step 4: Simplify right side
    7,275.88x = 45,242,567.96
  5. Step 5: Solve for x
    x = 45,242,567.96/7,275.88
  6. Step 6: Final answer
    x = 6,218.16

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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.