Home / 1,917.13-2,646.53-1,445.21

Finding the Fourth Proportional to 1,917.13, 2,646.53 and 1,445.21

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Solution

The fourth proportional to 1,917.13, 2,646.53 and 1,445.21 is: 1,995.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.13 : 2,646.53 = 1,445.21 : x
  2. Step 2: Convert to fraction form
    1,917.13/2,646.53 = 1,445.21/x
  3. Step 3: Cross multiply
    1,917.13x = 2,646.53 × 1,445.21
  4. Step 4: Simplify right side
    1,917.13x = 3,824,796.91
  5. Step 5: Solve for x
    x = 3,824,796.91/1,917.13
  6. Step 6: Final answer
    x = 1,995.07

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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.