Home / 3,157.40-4,357.86-2,894.96

Finding the Fourth Proportional to 3,157.40, 4,357.86 and 2,894.96

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Solution

The fourth proportional to 3,157.40, 4,357.86 and 2,894.96 is: 3,995.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.40 : 4,357.86 = 2,894.96 : x
  2. Step 2: Convert to fraction form
    3,157.40/4,357.86 = 2,894.96/x
  3. Step 3: Cross multiply
    3,157.40x = 4,357.86 × 2,894.96
  4. Step 4: Simplify right side
    3,157.40x = 12,615,830.39
  5. Step 5: Solve for x
    x = 12,615,830.39/3,157.40
  6. Step 6: Final answer
    x = 3,995.64

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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.