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Finding the Fourth Proportional to 7,486.70, 11,217.90 and 4,708.40

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Solution

The fourth proportional to 7,486.70, 11,217.90 and 4,708.40 is: 7,054.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.70 : 11,217.90 = 4,708.40 : x
  2. Step 2: Convert to fraction form
    7,486.70/11,217.90 = 4,708.40/x
  3. Step 3: Cross multiply
    7,486.70x = 11,217.90 × 4,708.40
  4. Step 4: Simplify right side
    7,486.70x = 52,818,360.36
  5. Step 5: Solve for x
    x = 52,818,360.36/7,486.70
  6. Step 6: Final answer
    x = 7,054.96

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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.