Home / 3,135.68-4,326.95-1,809.47

Finding the Fourth Proportional to 3,135.68, 4,326.95 and 1,809.47

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Solution

The fourth proportional to 3,135.68, 4,326.95 and 1,809.47 is: 2,496.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.68 : 4,326.95 = 1,809.47 : x
  2. Step 2: Convert to fraction form
    3,135.68/4,326.95 = 1,809.47/x
  3. Step 3: Cross multiply
    3,135.68x = 4,326.95 × 1,809.47
  4. Step 4: Simplify right side
    3,135.68x = 7,829,486.22
  5. Step 5: Solve for x
    x = 7,829,486.22/3,135.68
  6. Step 6: Final answer
    x = 2,496.90

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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.