Home / 1,039.21-1,434.13-567.12

Finding the Fourth Proportional to 1,039.21, 1,434.13 and 567.12

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Solution

The fourth proportional to 1,039.21, 1,434.13 and 567.12 is: 782.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.21 : 1,434.13 = 567.12 : x
  2. Step 2: Convert to fraction form
    1,039.21/1,434.13 = 567.12/x
  3. Step 3: Cross multiply
    1,039.21x = 1,434.13 × 567.12
  4. Step 4: Simplify right side
    1,039.21x = 813,327.77
  5. Step 5: Solve for x
    x = 813,327.77/1,039.21
  6. Step 6: Final answer
    x = 782.64

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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.