Home / 1,035.18-1,428.42-615.55

Finding the Fourth Proportional to 1,035.18, 1,428.42 and 615.55

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Solution

The fourth proportional to 1,035.18, 1,428.42 and 615.55 is: 849.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.18 : 1,428.42 = 615.55 : x
  2. Step 2: Convert to fraction form
    1,035.18/1,428.42 = 615.55/x
  3. Step 3: Cross multiply
    1,035.18x = 1,428.42 × 615.55
  4. Step 4: Simplify right side
    1,035.18x = 879,263.93
  5. Step 5: Solve for x
    x = 879,263.93/1,035.18
  6. Step 6: Final answer
    x = 849.38

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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.