Home / 1,035.21-1,552.80-690.75

Finding the Fourth Proportional to 1,035.21, 1,552.80 and 690.75

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Solution

The fourth proportional to 1,035.21, 1,552.80 and 690.75 is: 1,036.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.21 : 1,552.80 = 690.75 : x
  2. Step 2: Convert to fraction form
    1,035.21/1,552.80 = 690.75/x
  3. Step 3: Cross multiply
    1,035.21x = 1,552.80 × 690.75
  4. Step 4: Simplify right side
    1,035.21x = 1,072,596.60
  5. Step 5: Solve for x
    x = 1,072,596.60/1,035.21
  6. Step 6: Final answer
    x = 1,036.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.