Home / 1,929.40-2,660.34-1,340.44

Finding the Fourth Proportional to 1,929.40, 2,660.34 and 1,340.44

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Solution

The fourth proportional to 1,929.40, 2,660.34 and 1,340.44 is: 1,848.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.40 : 2,660.34 = 1,340.44 : x
  2. Step 2: Convert to fraction form
    1,929.40/2,660.34 = 1,340.44/x
  3. Step 3: Cross multiply
    1,929.40x = 2,660.34 × 1,340.44
  4. Step 4: Simplify right side
    1,929.40x = 3,566,026.15
  5. Step 5: Solve for x
    x = 3,566,026.15/1,929.40
  6. Step 6: Final answer
    x = 1,848.26

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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.