Home / 3,130.95-4,321.46-2,068.92

Finding the Fourth Proportional to 3,130.95, 4,321.46 and 2,068.92

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Solution

The fourth proportional to 3,130.95, 4,321.46 and 2,068.92 is: 2,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.95 : 4,321.46 = 2,068.92 : x
  2. Step 2: Convert to fraction form
    3,130.95/4,321.46 = 2,068.92/x
  3. Step 3: Cross multiply
    3,130.95x = 4,321.46 × 2,068.92
  4. Step 4: Simplify right side
    3,130.95x = 8,940,744.68
  5. Step 5: Solve for x
    x = 8,940,744.68/3,130.95
  6. Step 6: Final answer
    x = 2,855.60

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Half scale
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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.