Home / 3,215.98-4,438.08-1,889.71

Finding the Fourth Proportional to 3,215.98, 4,438.08 and 1,889.71

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Solution

The fourth proportional to 3,215.98, 4,438.08 and 1,889.71 is: 2,607.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.98 : 4,438.08 = 1,889.71 : x
  2. Step 2: Convert to fraction form
    3,215.98/4,438.08 = 1,889.71/x
  3. Step 3: Cross multiply
    3,215.98x = 4,438.08 × 1,889.71
  4. Step 4: Simplify right side
    3,215.98x = 8,386,684.16
  5. Step 5: Solve for x
    x = 8,386,684.16/3,215.98
  6. Step 6: Final answer
    x = 2,607.82

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Half scale
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Double scale
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Similar ratio
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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.