Home / 3,131.16-4,673.76-2,762.08

Finding the Fourth Proportional to 3,131.16, 4,673.76 and 2,762.08

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Solution

The fourth proportional to 3,131.16, 4,673.76 and 2,762.08 is: 4,122.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.16 : 4,673.76 = 2,762.08 : x
  2. Step 2: Convert to fraction form
    3,131.16/4,673.76 = 2,762.08/x
  3. Step 3: Cross multiply
    3,131.16x = 4,673.76 × 2,762.08
  4. Step 4: Simplify right side
    3,131.16x = 12,909,299.02
  5. Step 5: Solve for x
    x = 12,909,299.02/3,131.16
  6. Step 6: Final answer
    x = 4,122.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.