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Finding the Fourth Proportional to 7,103.40, 10,655.10 and 3,153.73

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Solution

The fourth proportional to 7,103.40, 10,655.10 and 3,153.73 is: 4,730.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,103.40 : 10,655.10 = 3,153.73 : x
  2. Step 2: Convert to fraction form
    7,103.40/10,655.10 = 3,153.73/x
  3. Step 3: Cross multiply
    7,103.40x = 10,655.10 × 3,153.73
  4. Step 4: Simplify right side
    7,103.40x = 33,603,303.77
  5. Step 5: Solve for x
    x = 33,603,303.77/7,103.40
  6. Step 6: Final answer
    x = 4,730.59

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Half scale
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Double scale
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Similar ratio
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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.