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Finding the Fourth Proportional to 7,905.71, 10,908.98 and 4,880.28

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Solution

The fourth proportional to 7,905.71, 10,908.98 and 4,880.28 is: 6,734.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.71 : 10,908.98 = 4,880.28 : x
  2. Step 2: Convert to fraction form
    7,905.71/10,908.98 = 4,880.28/x
  3. Step 3: Cross multiply
    7,905.71x = 10,908.98 × 4,880.28
  4. Step 4: Simplify right side
    7,905.71x = 53,238,911.72
  5. Step 5: Solve for x
    x = 53,238,911.72/7,905.71
  6. Step 6: Final answer
    x = 6,734.24

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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.