Home / 1,275.26-1,913.07-397.82

Finding the Fourth Proportional to 1,275.26, 1,913.07 and 397.82

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Solution

The fourth proportional to 1,275.26, 1,913.07 and 397.82 is: 596.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275.26 : 1,913.07 = 397.82 : x
  2. Step 2: Convert to fraction form
    1,275.26/1,913.07 = 397.82/x
  3. Step 3: Cross multiply
    1,275.26x = 1,913.07 × 397.82
  4. Step 4: Simplify right side
    1,275.26x = 761,057.51
  5. Step 5: Solve for x
    x = 761,057.51/1,275.26
  6. Step 6: Final answer
    x = 596.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.