Home / 2,830.95-3,906.93-1,572.12

Finding the Fourth Proportional to 2,830.95, 3,906.93 and 1,572.12

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Solution

The fourth proportional to 2,830.95, 3,906.93 and 1,572.12 is: 2,169.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.95 : 3,906.93 = 1,572.12 : x
  2. Step 2: Convert to fraction form
    2,830.95/3,906.93 = 1,572.12/x
  3. Step 3: Cross multiply
    2,830.95x = 3,906.93 × 1,572.12
  4. Step 4: Simplify right side
    2,830.95x = 6,142,168.69
  5. Step 5: Solve for x
    x = 6,142,168.69/2,830.95
  6. Step 6: Final answer
    x = 2,169.65

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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.