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Finding the Fourth Proportional to 9,139.88, 13,703.70 and 3,295.70

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Solution

The fourth proportional to 9,139.88, 13,703.70 and 3,295.70 is: 4,941.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.88 : 13,703.70 = 3,295.70 : x
  2. Step 2: Convert to fraction form
    9,139.88/13,703.70 = 3,295.70/x
  3. Step 3: Cross multiply
    9,139.88x = 13,703.70 × 3,295.70
  4. Step 4: Simplify right side
    9,139.88x = 45,163,284.09
  5. Step 5: Solve for x
    x = 45,163,284.09/9,139.88
  6. Step 6: Final answer
    x = 4,941.34

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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.