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Finding the Fourth Proportional to 5,675.39, 8,513.12 and 1,977.69

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Solution

The fourth proportional to 5,675.39, 8,513.12 and 1,977.69 is: 2,966.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,675.39 : 8,513.12 = 1,977.69 : x
  2. Step 2: Convert to fraction form
    5,675.39/8,513.12 = 1,977.69/x
  3. Step 3: Cross multiply
    5,675.39x = 8,513.12 × 1,977.69
  4. Step 4: Simplify right side
    5,675.39x = 16,836,317.24
  5. Step 5: Solve for x
    x = 16,836,317.24/5,675.39
  6. Step 6: Final answer
    x = 2,966.55

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Double scale
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Similar ratio
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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.