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Finding the Fourth Proportional to 4,718.70, 7,112.93 and 4,394.70

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Solution

The fourth proportional to 4,718.70, 7,112.93 and 4,394.70 is: 6,624.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,718.70 : 7,112.93 = 4,394.70 : x
  2. Step 2: Convert to fraction form
    4,718.70/7,112.93 = 4,394.70/x
  3. Step 3: Cross multiply
    4,718.70x = 7,112.93 × 4,394.70
  4. Step 4: Simplify right side
    4,718.70x = 31,259,171.50
  5. Step 5: Solve for x
    x = 31,259,171.50/4,718.70
  6. Step 6: Final answer
    x = 6,624.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.