Home / 5,157.54-7,117.35-2,919.40

Finding the Fourth Proportional to 5,157.54, 7,117.35 and 2,919.40

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Solution

The fourth proportional to 5,157.54, 7,117.35 and 2,919.40 is: 4,028.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.54 : 7,117.35 = 2,919.40 : x
  2. Step 2: Convert to fraction form
    5,157.54/7,117.35 = 2,919.40/x
  3. Step 3: Cross multiply
    5,157.54x = 7,117.35 × 2,919.40
  4. Step 4: Simplify right side
    5,157.54x = 20,778,391.59
  5. Step 5: Solve for x
    x = 20,778,391.59/5,157.54
  6. Step 6: Final answer
    x = 4,028.74

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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.