Home / 2,145.02-2,959.68-1,260.50

Finding the Fourth Proportional to 2,145.02, 2,959.68 and 1,260.50

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Solution

The fourth proportional to 2,145.02, 2,959.68 and 1,260.50 is: 1,739.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.02 : 2,959.68 = 1,260.50 : x
  2. Step 2: Convert to fraction form
    2,145.02/2,959.68 = 1,260.50/x
  3. Step 3: Cross multiply
    2,145.02x = 2,959.68 × 1,260.50
  4. Step 4: Simplify right side
    2,145.02x = 3,730,676.64
  5. Step 5: Solve for x
    x = 3,730,676.64/2,145.02
  6. Step 6: Final answer
    x = 1,739.23

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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.