Home / 1,929.74-2,663.08-1,143.80

Finding the Fourth Proportional to 1,929.74, 2,663.08 and 1,143.80

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Solution

The fourth proportional to 1,929.74, 2,663.08 and 1,143.80 is: 1,578.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.74 : 2,663.08 = 1,143.80 : x
  2. Step 2: Convert to fraction form
    1,929.74/2,663.08 = 1,143.80/x
  3. Step 3: Cross multiply
    1,929.74x = 2,663.08 × 1,143.80
  4. Step 4: Simplify right side
    1,929.74x = 3,046,030.90
  5. Step 5: Solve for x
    x = 3,046,030.90/1,929.74
  6. Step 6: Final answer
    x = 1,578.47

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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.