Home / 2,829.90-3,905.28-1,570.80

Finding the Fourth Proportional to 2,829.90, 3,905.28 and 1,570.80

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Solution

The fourth proportional to 2,829.90, 3,905.28 and 1,570.80 is: 2,167.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,829.90 : 3,905.28 = 1,570.80 : x
  2. Step 2: Convert to fraction form
    2,829.90/3,905.28 = 1,570.80/x
  3. Step 3: Cross multiply
    2,829.90x = 3,905.28 × 1,570.80
  4. Step 4: Simplify right side
    2,829.90x = 6,134,413.82
  5. Step 5: Solve for x
    x = 6,134,413.82/2,829.90
  6. Step 6: Final answer
    x = 2,167.71

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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.