Home / 3,135.48-4,326.90-1,809.12

Finding the Fourth Proportional to 3,135.48, 4,326.90 and 1,809.12

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Solution

The fourth proportional to 3,135.48, 4,326.90 and 1,809.12 is: 2,496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.48 : 4,326.90 = 1,809.12 : x
  2. Step 2: Convert to fraction form
    3,135.48/4,326.90 = 1,809.12/x
  3. Step 3: Cross multiply
    3,135.48x = 4,326.90 × 1,809.12
  4. Step 4: Simplify right side
    3,135.48x = 7,827,881.33
  5. Step 5: Solve for x
    x = 7,827,881.33/3,135.48
  6. Step 6: Final answer
    x = 2,496.55

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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.