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Finding the Fourth Proportional to 3,157.62, 4,357.89 and 1,813.71

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Solution

The fourth proportional to 3,157.62, 4,357.89 and 1,813.71 is: 2,503.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.62 : 4,357.89 = 1,813.71 : x
  2. Step 2: Convert to fraction form
    3,157.62/4,357.89 = 1,813.71/x
  3. Step 3: Cross multiply
    3,157.62x = 4,357.89 × 1,813.71
  4. Step 4: Simplify right side
    3,157.62x = 7,903,948.67
  5. Step 5: Solve for x
    x = 7,903,948.67/3,157.62
  6. Step 6: Final answer
    x = 2,503.13

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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.