Home / 3,126.48-4,313.88-1,867.20

Finding the Fourth Proportional to 3,126.48, 4,313.88 and 1,867.20

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Solution

The fourth proportional to 3,126.48, 4,313.88 and 1,867.20 is: 2,576.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.48 : 4,313.88 = 1,867.20 : x
  2. Step 2: Convert to fraction form
    3,126.48/4,313.88 = 1,867.20/x
  3. Step 3: Cross multiply
    3,126.48x = 4,313.88 × 1,867.20
  4. Step 4: Simplify right side
    3,126.48x = 8,054,876.74
  5. Step 5: Solve for x
    x = 8,054,876.74/3,126.48
  6. Step 6: Final answer
    x = 2,576.34

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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.