Home / 5,857.20-8,785.80-1,908.45

Finding the Fourth Proportional to 5,857.20, 8,785.80 and 1,908.45

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Solution

The fourth proportional to 5,857.20, 8,785.80 and 1,908.45 is: 2,862.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,857.20 : 8,785.80 = 1,908.45 : x
  2. Step 2: Convert to fraction form
    5,857.20/8,785.80 = 1,908.45/x
  3. Step 3: Cross multiply
    5,857.20x = 8,785.80 × 1,908.45
  4. Step 4: Simplify right side
    5,857.20x = 16,767,260.01
  5. Step 5: Solve for x
    x = 16,767,260.01/5,857.20
  6. Step 6: Final answer
    x = 2,862.68

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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.