Home / 3,171.32-4,376.40-1,845.80

Finding the Fourth Proportional to 3,171.32, 4,376.40 and 1,845.80

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Solution

The fourth proportional to 3,171.32, 4,376.40 and 1,845.80 is: 2,547.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.32 : 4,376.40 = 1,845.80 : x
  2. Step 2: Convert to fraction form
    3,171.32/4,376.40 = 1,845.80/x
  3. Step 3: Cross multiply
    3,171.32x = 4,376.40 × 1,845.80
  4. Step 4: Simplify right side
    3,171.32x = 8,077,959.12
  5. Step 5: Solve for x
    x = 8,077,959.12/3,171.32
  6. Step 6: Final answer
    x = 2,547.19

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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.