Home / 2,150.40-2,967.12-1,311.36

Finding the Fourth Proportional to 2,150.40, 2,967.12 and 1,311.36

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Solution

The fourth proportional to 2,150.40, 2,967.12 and 1,311.36 is: 1,809.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,150.40 : 2,967.12 = 1,311.36 : x
  2. Step 2: Convert to fraction form
    2,150.40/2,967.12 = 1,311.36/x
  3. Step 3: Cross multiply
    2,150.40x = 2,967.12 × 1,311.36
  4. Step 4: Simplify right side
    2,150.40x = 3,890,962.48
  5. Step 5: Solve for x
    x = 3,890,962.48/2,150.40
  6. Step 6: Final answer
    x = 1,809.41

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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.