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Finding the Fourth Proportional to 1,708.93, 2,562.64 and 784.79

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Solution

The fourth proportional to 1,708.93, 2,562.64 and 784.79 is: 1,176.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.93 : 2,562.64 = 784.79 : x
  2. Step 2: Convert to fraction form
    1,708.93/2,562.64 = 784.79/x
  3. Step 3: Cross multiply
    1,708.93x = 2,562.64 × 784.79
  4. Step 4: Simplify right side
    1,708.93x = 2,011,129.08
  5. Step 5: Solve for x
    x = 2,011,129.08/1,708.93
  6. Step 6: Final answer
    x = 1,176.83

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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.