Home / 1,929.48-2,664-1,231.80

Finding the Fourth Proportional to 1,929.48, 2,664 and 1,231.80

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Solution

The fourth proportional to 1,929.48, 2,664 and 1,231.80 is: 1,700.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.48 : 2,664 = 1,231.80 : x
  2. Step 2: Convert to fraction form
    1,929.48/2,664 = 1,231.80/x
  3. Step 3: Cross multiply
    1,929.48x = 2,664 × 1,231.80
  4. Step 4: Simplify right side
    1,929.48x = 3,281,515.20
  5. Step 5: Solve for x
    x = 3,281,515.20/1,929.48
  6. Step 6: Final answer
    x = 1,700.73

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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.