Home / 1,252.20-1,880.10-946.20

Finding the Fourth Proportional to 1,252.20, 1,880.10 and 946.20

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Solution

The fourth proportional to 1,252.20, 1,880.10 and 946.20 is: 1,420.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.20 : 1,880.10 = 946.20 : x
  2. Step 2: Convert to fraction form
    1,252.20/1,880.10 = 946.20/x
  3. Step 3: Cross multiply
    1,252.20x = 1,880.10 × 946.20
  4. Step 4: Simplify right side
    1,252.20x = 1,778,950.62
  5. Step 5: Solve for x
    x = 1,778,950.62/1,252.20
  6. Step 6: Final answer
    x = 1,420.66

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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.