Home / 3,131.20-4,320.64-1,733.76

Finding the Fourth Proportional to 3,131.20, 4,320.64 and 1,733.76

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Solution

The fourth proportional to 3,131.20, 4,320.64 and 1,733.76 is: 2,392.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.20 : 4,320.64 = 1,733.76 : x
  2. Step 2: Convert to fraction form
    3,131.20/4,320.64 = 1,733.76/x
  3. Step 3: Cross multiply
    3,131.20x = 4,320.64 × 1,733.76
  4. Step 4: Simplify right side
    3,131.20x = 7,490,952.81
  5. Step 5: Solve for x
    x = 7,490,952.81/3,131.20
  6. Step 6: Final answer
    x = 2,392.36

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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.