Home / 1,035.18-1,428.55-569.43

Finding the Fourth Proportional to 1,035.18, 1,428.55 and 569.43

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Solution

The fourth proportional to 1,035.18, 1,428.55 and 569.43 is: 785.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.18 : 1,428.55 = 569.43 : x
  2. Step 2: Convert to fraction form
    1,035.18/1,428.55 = 569.43/x
  3. Step 3: Cross multiply
    1,035.18x = 1,428.55 × 569.43
  4. Step 4: Simplify right side
    1,035.18x = 813,457.80
  5. Step 5: Solve for x
    x = 813,457.80/1,035.18
  6. Step 6: Final answer
    x = 785.81

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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.