Home / 1,929.80-2,663.09-1,045.60

Finding the Fourth Proportional to 1,929.80, 2,663.09 and 1,045.60

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Solution

The fourth proportional to 1,929.80, 2,663.09 and 1,045.60 is: 1,442.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.80 : 2,663.09 = 1,045.60 : x
  2. Step 2: Convert to fraction form
    1,929.80/2,663.09 = 1,045.60/x
  3. Step 3: Cross multiply
    1,929.80x = 2,663.09 × 1,045.60
  4. Step 4: Simplify right side
    1,929.80x = 2,784,526.90
  5. Step 5: Solve for x
    x = 2,784,526.90/1,929.80
  6. Step 6: Final answer
    x = 1,442.91

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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.