Home / 1,398.02-2,096.37-1,288.58

Finding the Fourth Proportional to 1,398.02, 2,096.37 and 1,288.58

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Solution

The fourth proportional to 1,398.02, 2,096.37 and 1,288.58 is: 1,932.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398.02 : 2,096.37 = 1,288.58 : x
  2. Step 2: Convert to fraction form
    1,398.02/2,096.37 = 1,288.58/x
  3. Step 3: Cross multiply
    1,398.02x = 2,096.37 × 1,288.58
  4. Step 4: Simplify right side
    1,398.02x = 2,701,340.45
  5. Step 5: Solve for x
    x = 2,701,340.45/1,398.02
  6. Step 6: Final answer
    x = 1,932.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.