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Finding the Fourth Proportional to 4,655.91, 6,981.17 and 1,880.31

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Solution

The fourth proportional to 4,655.91, 6,981.17 and 1,880.31 is: 2,819.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,655.91 : 6,981.17 = 1,880.31 : x
  2. Step 2: Convert to fraction form
    4,655.91/6,981.17 = 1,880.31/x
  3. Step 3: Cross multiply
    4,655.91x = 6,981.17 × 1,880.31
  4. Step 4: Simplify right side
    4,655.91x = 13,126,754.36
  5. Step 5: Solve for x
    x = 13,126,754.36/4,655.91
  6. Step 6: Final answer
    x = 2,819.37

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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.