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Finding the Fourth Proportional to 1,856.34, 2,784.49 and 746.26

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Solution

The fourth proportional to 1,856.34, 2,784.49 and 746.26 is: 1,119.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.34 : 2,784.49 = 746.26 : x
  2. Step 2: Convert to fraction form
    1,856.34/2,784.49 = 746.26/x
  3. Step 3: Cross multiply
    1,856.34x = 2,784.49 × 746.26
  4. Step 4: Simplify right side
    1,856.34x = 2,077,953.51
  5. Step 5: Solve for x
    x = 2,077,953.51/1,856.34
  6. Step 6: Final answer
    x = 1,119.38

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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.