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Finding the Fourth Proportional to 1,865.68, 2,573.24 and 1,782.96

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Solution

The fourth proportional to 1,865.68, 2,573.24 and 1,782.96 is: 2,459.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.68 : 2,573.24 = 1,782.96 : x
  2. Step 2: Convert to fraction form
    1,865.68/2,573.24 = 1,782.96/x
  3. Step 3: Cross multiply
    1,865.68x = 2,573.24 × 1,782.96
  4. Step 4: Simplify right side
    1,865.68x = 4,587,983.99
  5. Step 5: Solve for x
    x = 4,587,983.99/1,865.68
  6. Step 6: Final answer
    x = 2,459.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.