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Finding the Fourth Proportional to 7,153.84, 10,730.76 and 1,959.76

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Solution

The fourth proportional to 7,153.84, 10,730.76 and 1,959.76 is: 2,939.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.84 : 10,730.76 = 1,959.76 : x
  2. Step 2: Convert to fraction form
    7,153.84/10,730.76 = 1,959.76/x
  3. Step 3: Cross multiply
    7,153.84x = 10,730.76 × 1,959.76
  4. Step 4: Simplify right side
    7,153.84x = 21,029,714.22
  5. Step 5: Solve for x
    x = 21,029,714.22/7,153.84
  6. Step 6: Final answer
    x = 2,939.64

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Similar ratio
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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.