Home / 1,322.11-1,983.26-397.63

Finding the Fourth Proportional to 1,322.11, 1,983.26 and 397.63

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Solution

The fourth proportional to 1,322.11, 1,983.26 and 397.63 is: 596.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.11 : 1,983.26 = 397.63 : x
  2. Step 2: Convert to fraction form
    1,322.11/1,983.26 = 397.63/x
  3. Step 3: Cross multiply
    1,322.11x = 1,983.26 × 397.63
  4. Step 4: Simplify right side
    1,322.11x = 788,603.67
  5. Step 5: Solve for x
    x = 788,603.67/1,322.11
  6. Step 6: Final answer
    x = 596.47

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1.5x scale

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.