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Finding the Fourth Proportional to 7,326.60, 10,965.60 and 5,139.60

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Solution

The fourth proportional to 7,326.60, 10,965.60 and 5,139.60 is: 7,692.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,326.60 : 10,965.60 = 5,139.60 : x
  2. Step 2: Convert to fraction form
    7,326.60/10,965.60 = 5,139.60/x
  3. Step 3: Cross multiply
    7,326.60x = 10,965.60 × 5,139.60
  4. Step 4: Simplify right side
    7,326.60x = 56,358,797.76
  5. Step 5: Solve for x
    x = 56,358,797.76/7,326.60
  6. Step 6: Final answer
    x = 7,692.35

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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.