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Finding the Fourth Proportional to 5,673.53, 7,829.39 and 3,155.63

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Solution

The fourth proportional to 5,673.53, 7,829.39 and 3,155.63 is: 4,354.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,673.53 : 7,829.39 = 3,155.63 : x
  2. Step 2: Convert to fraction form
    5,673.53/7,829.39 = 3,155.63/x
  3. Step 3: Cross multiply
    5,673.53x = 7,829.39 × 3,155.63
  4. Step 4: Simplify right side
    5,673.53x = 24,706,626.71
  5. Step 5: Solve for x
    x = 24,706,626.71/5,673.53
  6. Step 6: Final answer
    x = 4,354.72

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1.5x scale

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.