Home / 1,671.67-2,305.85-1,317.21

Finding the Fourth Proportional to 1,671.67, 2,305.85 and 1,317.21

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Solution

The fourth proportional to 1,671.67, 2,305.85 and 1,317.21 is: 1,816.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.67 : 2,305.85 = 1,317.21 : x
  2. Step 2: Convert to fraction form
    1,671.67/2,305.85 = 1,317.21/x
  3. Step 3: Cross multiply
    1,671.67x = 2,305.85 × 1,317.21
  4. Step 4: Simplify right side
    1,671.67x = 3,037,293.83
  5. Step 5: Solve for x
    x = 3,037,293.83/1,671.67
  6. Step 6: Final answer
    x = 1,816.92

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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.