Home / 1,807.39-2,493.48-1,218.31

Finding the Fourth Proportional to 1,807.39, 2,493.48 and 1,218.31

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Solution

The fourth proportional to 1,807.39, 2,493.48 and 1,218.31 is: 1,680.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.39 : 2,493.48 = 1,218.31 : x
  2. Step 2: Convert to fraction form
    1,807.39/2,493.48 = 1,218.31/x
  3. Step 3: Cross multiply
    1,807.39x = 2,493.48 × 1,218.31
  4. Step 4: Simplify right side
    1,807.39x = 3,037,831.62
  5. Step 5: Solve for x
    x = 3,037,831.62/1,807.39
  6. Step 6: Final answer
    x = 1,680.78

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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.