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Finding the Fourth Proportional to 9,750.40, 14,625.60 and 3,911.20

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Solution

The fourth proportional to 9,750.40, 14,625.60 and 3,911.20 is: 5,866.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,750.40 : 14,625.60 = 3,911.20 : x
  2. Step 2: Convert to fraction form
    9,750.40/14,625.60 = 3,911.20/x
  3. Step 3: Cross multiply
    9,750.40x = 14,625.60 × 3,911.20
  4. Step 4: Simplify right side
    9,750.40x = 57,203,646.72
  5. Step 5: Solve for x
    x = 57,203,646.72/9,750.40
  6. Step 6: Final answer
    x = 5,866.80

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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.