Home / 1,039.40-1,434.31-597.21

Finding the Fourth Proportional to 1,039.40, 1,434.31 and 597.21

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Solution

The fourth proportional to 1,039.40, 1,434.31 and 597.21 is: 824.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.40 : 1,434.31 = 597.21 : x
  2. Step 2: Convert to fraction form
    1,039.40/1,434.31 = 597.21/x
  3. Step 3: Cross multiply
    1,039.40x = 1,434.31 × 597.21
  4. Step 4: Simplify right side
    1,039.40x = 856,577.40
  5. Step 5: Solve for x
    x = 856,577.40/1,039.40
  6. Step 6: Final answer
    x = 824.11

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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.