Home / 2,829.89-3,905.07-1,570.89

Finding the Fourth Proportional to 2,829.89, 3,905.07 and 1,570.89

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Solution

The fourth proportional to 2,829.89, 3,905.07 and 1,570.89 is: 2,167.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,829.89 : 3,905.07 = 1,570.89 : x
  2. Step 2: Convert to fraction form
    2,829.89/3,905.07 = 1,570.89/x
  3. Step 3: Cross multiply
    2,829.89x = 3,905.07 × 1,570.89
  4. Step 4: Simplify right side
    2,829.89x = 6,134,425.14
  5. Step 5: Solve for x
    x = 6,134,425.14/2,829.89
  6. Step 6: Final answer
    x = 2,167.72

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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.