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Finding the Fourth Proportional to 1,968.84, 2,953.62 and 814.68

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Solution

The fourth proportional to 1,968.84, 2,953.62 and 814.68 is: 1,222.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.84 : 2,953.62 = 814.68 : x
  2. Step 2: Convert to fraction form
    1,968.84/2,953.62 = 814.68/x
  3. Step 3: Cross multiply
    1,968.84x = 2,953.62 × 814.68
  4. Step 4: Simplify right side
    1,968.84x = 2,406,255.14
  5. Step 5: Solve for x
    x = 2,406,255.14/1,968.84
  6. Step 6: Final answer
    x = 1,222.17

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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.