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Finding the Fourth Proportional to 7,820.64, 10,792.08 and 4,283.76

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Solution

The fourth proportional to 7,820.64, 10,792.08 and 4,283.76 is: 5,911.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.64 : 10,792.08 = 4,283.76 : x
  2. Step 2: Convert to fraction form
    7,820.64/10,792.08 = 4,283.76/x
  3. Step 3: Cross multiply
    7,820.64x = 10,792.08 × 4,283.76
  4. Step 4: Simplify right side
    7,820.64x = 46,230,680.62
  5. Step 5: Solve for x
    x = 46,230,680.62/7,820.64
  6. Step 6: Final answer
    x = 5,911.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.