Home / 4,972.12-6,869.82-4,142.68

Finding the Fourth Proportional to 4,972.12, 6,869.82 and 4,142.68

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Solution

The fourth proportional to 4,972.12, 6,869.82 and 4,142.68 is: 5,723.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,972.12 : 6,869.82 = 4,142.68 : x
  2. Step 2: Convert to fraction form
    4,972.12/6,869.82 = 4,142.68/x
  3. Step 3: Cross multiply
    4,972.12x = 6,869.82 × 4,142.68
  4. Step 4: Simplify right side
    4,972.12x = 28,459,465.92
  5. Step 5: Solve for x
    x = 28,459,465.92/4,972.12
  6. Step 6: Final answer
    x = 5,723.81

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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.