Home / 5,857.40-8,780.16-1,958.60

Finding the Fourth Proportional to 5,857.40, 8,780.16 and 1,958.60

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Solution

The fourth proportional to 5,857.40, 8,780.16 and 1,958.60 is: 2,935.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,857.40 : 8,780.16 = 1,958.60 : x
  2. Step 2: Convert to fraction form
    5,857.40/8,780.16 = 1,958.60/x
  3. Step 3: Cross multiply
    5,857.40x = 8,780.16 × 1,958.60
  4. Step 4: Simplify right side
    5,857.40x = 17,196,821.38
  5. Step 5: Solve for x
    x = 17,196,821.38/5,857.40
  6. Step 6: Final answer
    x = 2,935.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.