Home / 3,145.56-4,330.96-2,853.96

Finding the Fourth Proportional to 3,145.56, 4,330.96 and 2,853.96

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Solution

The fourth proportional to 3,145.56, 4,330.96 and 2,853.96 is: 3,929.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.56 : 4,330.96 = 2,853.96 : x
  2. Step 2: Convert to fraction form
    3,145.56/4,330.96 = 2,853.96/x
  3. Step 3: Cross multiply
    3,145.56x = 4,330.96 × 2,853.96
  4. Step 4: Simplify right side
    3,145.56x = 12,360,386.60
  5. Step 5: Solve for x
    x = 12,360,386.60/3,145.56
  6. Step 6: Final answer
    x = 3,929.47

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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.