Home / 1,929.61-2,662.85-1,090.30

Finding the Fourth Proportional to 1,929.61, 2,662.85 and 1,090.30

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Solution

The fourth proportional to 1,929.61, 2,662.85 and 1,090.30 is: 1,504.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.61 : 2,662.85 = 1,090.30 : x
  2. Step 2: Convert to fraction form
    1,929.61/2,662.85 = 1,090.30/x
  3. Step 3: Cross multiply
    1,929.61x = 2,662.85 × 1,090.30
  4. Step 4: Simplify right side
    1,929.61x = 2,903,300.28
  5. Step 5: Solve for x
    x = 2,903,300.28/1,929.61
  6. Step 6: Final answer
    x = 1,504.60

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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.