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Finding the Fourth Proportional to 7,718.70, 11,575.35 and 4,019.70

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Solution

The fourth proportional to 7,718.70, 11,575.35 and 4,019.70 is: 6,028.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.70 : 11,575.35 = 4,019.70 : x
  2. Step 2: Convert to fraction form
    7,718.70/11,575.35 = 4,019.70/x
  3. Step 3: Cross multiply
    7,718.70x = 11,575.35 × 4,019.70
  4. Step 4: Simplify right side
    7,718.70x = 46,529,434.40
  5. Step 5: Solve for x
    x = 46,529,434.40/7,718.70
  6. Step 6: Final answer
    x = 6,028.14

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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.