Home / 1,909.83-2,637.65-1,313.91

Finding the Fourth Proportional to 1,909.83, 2,637.65 and 1,313.91

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Solution

The fourth proportional to 1,909.83, 2,637.65 and 1,313.91 is: 1,814.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.83 : 2,637.65 = 1,313.91 : x
  2. Step 2: Convert to fraction form
    1,909.83/2,637.65 = 1,313.91/x
  3. Step 3: Cross multiply
    1,909.83x = 2,637.65 × 1,313.91
  4. Step 4: Simplify right side
    1,909.83x = 3,465,632.44
  5. Step 5: Solve for x
    x = 3,465,632.44/1,909.83
  6. Step 6: Final answer
    x = 1,814.63

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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.