Home / 3,135.30-4,326.90-1,809.10

Finding the Fourth Proportional to 3,135.30, 4,326.90 and 1,809.10

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Solution

The fourth proportional to 3,135.30, 4,326.90 and 1,809.10 is: 2,496.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.30 : 4,326.90 = 1,809.10 : x
  2. Step 2: Convert to fraction form
    3,135.30/4,326.90 = 1,809.10/x
  3. Step 3: Cross multiply
    3,135.30x = 4,326.90 × 1,809.10
  4. Step 4: Simplify right side
    3,135.30x = 7,827,794.79
  5. Step 5: Solve for x
    x = 7,827,794.79/3,135.30
  6. Step 6: Final answer
    x = 2,496.67

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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.