Home / 3,145.67-4,340.85-1,886.10

Finding the Fourth Proportional to 3,145.67, 4,340.85 and 1,886.10

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Solution

The fourth proportional to 3,145.67, 4,340.85 and 1,886.10 is: 2,602.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.67 : 4,340.85 = 1,886.10 : x
  2. Step 2: Convert to fraction form
    3,145.67/4,340.85 = 1,886.10/x
  3. Step 3: Cross multiply
    3,145.67x = 4,340.85 × 1,886.10
  4. Step 4: Simplify right side
    3,145.67x = 8,187,277.19
  5. Step 5: Solve for x
    x = 8,187,277.19/3,145.67
  6. Step 6: Final answer
    x = 2,602.71

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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.