Home / 2,145.02-2,959.38-1,305.46

Finding the Fourth Proportional to 2,145.02, 2,959.38 and 1,305.46

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Solution

The fourth proportional to 2,145.02, 2,959.38 and 1,305.46 is: 1,801.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.02 : 2,959.38 = 1,305.46 : x
  2. Step 2: Convert to fraction form
    2,145.02/2,959.38 = 1,305.46/x
  3. Step 3: Cross multiply
    2,145.02x = 2,959.38 × 1,305.46
  4. Step 4: Simplify right side
    2,145.02x = 3,863,352.21
  5. Step 5: Solve for x
    x = 3,863,352.21/2,145.02
  6. Step 6: Final answer
    x = 1,801.08

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1.5x scale

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.