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Finding the Fourth Proportional to 7,153.65, 10,730.55 and 1,959.53

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Solution

The fourth proportional to 7,153.65, 10,730.55 and 1,959.53 is: 2,939.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.65 : 10,730.55 = 1,959.53 : x
  2. Step 2: Convert to fraction form
    7,153.65/10,730.55 = 1,959.53/x
  3. Step 3: Cross multiply
    7,153.65x = 10,730.55 × 1,959.53
  4. Step 4: Simplify right side
    7,153.65x = 21,026,780.99
  5. Step 5: Solve for x
    x = 21,026,780.99/7,153.65
  6. Step 6: Final answer
    x = 2,939.31

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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.