Home / 1,221.19-1,677.11-1,024.36

Finding the Fourth Proportional to 1,221.19, 1,677.11 and 1,024.36

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Solution

The fourth proportional to 1,221.19, 1,677.11 and 1,024.36 is: 1,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221.19 : 1,677.11 = 1,024.36 : x
  2. Step 2: Convert to fraction form
    1,221.19/1,677.11 = 1,024.36/x
  3. Step 3: Cross multiply
    1,221.19x = 1,677.11 × 1,024.36
  4. Step 4: Simplify right side
    1,221.19x = 1,717,964.40
  5. Step 5: Solve for x
    x = 1,717,964.40/1,221.19
  6. Step 6: Final answer
    x = 1,406.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.