Home / 1,221.79-1,829.47-1,026.31

Finding the Fourth Proportional to 1,221.79, 1,829.47 and 1,026.31

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Solution

The fourth proportional to 1,221.79, 1,829.47 and 1,026.31 is: 1,536.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221.79 : 1,829.47 = 1,026.31 : x
  2. Step 2: Convert to fraction form
    1,221.79/1,829.47 = 1,026.31/x
  3. Step 3: Cross multiply
    1,221.79x = 1,829.47 × 1,026.31
  4. Step 4: Simplify right side
    1,221.79x = 1,877,603.36
  5. Step 5: Solve for x
    x = 1,877,603.36/1,221.79
  6. Step 6: Final answer
    x = 1,536.76

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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.