Home / 2,180.34-3,008.40-1,296.45

Finding the Fourth Proportional to 2,180.34, 3,008.40 and 1,296.45

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Solution

The fourth proportional to 2,180.34, 3,008.40 and 1,296.45 is: 1,788.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.34 : 3,008.40 = 1,296.45 : x
  2. Step 2: Convert to fraction form
    2,180.34/3,008.40 = 1,296.45/x
  3. Step 3: Cross multiply
    2,180.34x = 3,008.40 × 1,296.45
  4. Step 4: Simplify right side
    2,180.34x = 3,900,240.18
  5. Step 5: Solve for x
    x = 3,900,240.18/2,180.34
  6. Step 6: Final answer
    x = 1,788.82

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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.