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Finding the Fourth Proportional to 1,709.03, 2,562.50 and 784.87

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Solution

The fourth proportional to 1,709.03, 2,562.50 and 784.87 is: 1,176.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.03 : 2,562.50 = 784.87 : x
  2. Step 2: Convert to fraction form
    1,709.03/2,562.50 = 784.87/x
  3. Step 3: Cross multiply
    1,709.03x = 2,562.50 × 784.87
  4. Step 4: Simplify right side
    1,709.03x = 2,011,224.93
  5. Step 5: Solve for x
    x = 2,011,224.93/1,709.03
  6. Step 6: Final answer
    x = 1,176.82

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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.