Home / 1,041.20-1,562.30-694.70

Finding the Fourth Proportional to 1,041.20, 1,562.30 and 694.70

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Solution

The fourth proportional to 1,041.20, 1,562.30 and 694.70 is: 1,042.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.20 : 1,562.30 = 694.70 : x
  2. Step 2: Convert to fraction form
    1,041.20/1,562.30 = 694.70/x
  3. Step 3: Cross multiply
    1,041.20x = 1,562.30 × 694.70
  4. Step 4: Simplify right side
    1,041.20x = 1,085,329.81
  5. Step 5: Solve for x
    x = 1,085,329.81/1,041.20
  6. Step 6: Final answer
    x = 1,042.38

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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.