Home / 1,196.40-1,649.52-1,021.44

Finding the Fourth Proportional to 1,196.40, 1,649.52 and 1,021.44

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Solution

The fourth proportional to 1,196.40, 1,649.52 and 1,021.44 is: 1,408.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196.40 : 1,649.52 = 1,021.44 : x
  2. Step 2: Convert to fraction form
    1,196.40/1,649.52 = 1,021.44/x
  3. Step 3: Cross multiply
    1,196.40x = 1,649.52 × 1,021.44
  4. Step 4: Simplify right side
    1,196.40x = 1,684,885.71
  5. Step 5: Solve for x
    x = 1,684,885.71/1,196.40
  6. Step 6: Final answer
    x = 1,408.30

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1.5x scale

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.