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Finding the Fourth Proportional to 3,856.63, 5,784.93 and 934.93

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Solution

The fourth proportional to 3,856.63, 5,784.93 and 934.93 is: 1,402.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.63 : 5,784.93 = 934.93 : x
  2. Step 2: Convert to fraction form
    3,856.63/5,784.93 = 934.93/x
  3. Step 3: Cross multiply
    3,856.63x = 5,784.93 × 934.93
  4. Step 4: Simplify right side
    3,856.63x = 5,408,504.60
  5. Step 5: Solve for x
    x = 5,408,504.60/3,856.63
  6. Step 6: Final answer
    x = 1,402.39

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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.