Home / 3,120.02-4,305.24-1,722.76

Finding the Fourth Proportional to 3,120.02, 4,305.24 and 1,722.76

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Solution

The fourth proportional to 3,120.02, 4,305.24 and 1,722.76 is: 2,377.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.02 : 4,305.24 = 1,722.76 : x
  2. Step 2: Convert to fraction form
    3,120.02/4,305.24 = 1,722.76/x
  3. Step 3: Cross multiply
    3,120.02x = 4,305.24 × 1,722.76
  4. Step 4: Simplify right side
    3,120.02x = 7,416,895.26
  5. Step 5: Solve for x
    x = 7,416,895.26/3,120.02
  6. Step 6: Final answer
    x = 2,377.19

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Half scale
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Double 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.