Home / 3,131.02-4,318.93-2,068.80

Finding the Fourth Proportional to 3,131.02, 4,318.93 and 2,068.80

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Solution

The fourth proportional to 3,131.02, 4,318.93 and 2,068.80 is: 2,853.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.02 : 4,318.93 = 2,068.80 : x
  2. Step 2: Convert to fraction form
    3,131.02/4,318.93 = 2,068.80/x
  3. Step 3: Cross multiply
    3,131.02x = 4,318.93 × 2,068.80
  4. Step 4: Simplify right side
    3,131.02x = 8,935,002.38
  5. Step 5: Solve for x
    x = 8,935,002.38/3,131.02
  6. Step 6: Final answer
    x = 2,853.70

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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.