Home / 1,035.35-1,428.80-569.60

Finding the Fourth Proportional to 1,035.35, 1,428.80 and 569.60

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Solution

The fourth proportional to 1,035.35, 1,428.80 and 569.60 is: 786.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.35 : 1,428.80 = 569.60 : x
  2. Step 2: Convert to fraction form
    1,035.35/1,428.80 = 569.60/x
  3. Step 3: Cross multiply
    1,035.35x = 1,428.80 × 569.60
  4. Step 4: Simplify right side
    1,035.35x = 813,839.85
  5. Step 5: Solve for x
    x = 813,839.85/1,035.35
  6. Step 6: Final answer
    x = 786.05

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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.