Home / 2,829.70-3,904.77-1,570.78

Finding the Fourth Proportional to 2,829.70, 3,904.77 and 1,570.78

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Solution

The fourth proportional to 2,829.70, 3,904.77 and 1,570.78 is: 2,167.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,829.70 : 3,904.77 = 1,570.78 : x
  2. Step 2: Convert to fraction form
    2,829.70/3,904.77 = 1,570.78/x
  3. Step 3: Cross multiply
    2,829.70x = 3,904.77 × 1,570.78
  4. Step 4: Simplify right side
    2,829.70x = 6,133,534.62
  5. Step 5: Solve for x
    x = 6,133,534.62/2,829.70
  6. Step 6: Final answer
    x = 2,167.56

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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.