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Finding the Fourth Proportional to 1,885.64, 2,829.39 and 846.40

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Solution

The fourth proportional to 1,885.64, 2,829.39 and 846.40 is: 1,270.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.64 : 2,829.39 = 846.40 : x
  2. Step 2: Convert to fraction form
    1,885.64/2,829.39 = 846.40/x
  3. Step 3: Cross multiply
    1,885.64x = 2,829.39 × 846.40
  4. Step 4: Simplify right side
    1,885.64x = 2,394,796.70
  5. Step 5: Solve for x
    x = 2,394,796.70/1,885.64
  6. Step 6: Final answer
    x = 1,270.02

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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.