Home / 2,646.32-3,970.30-1,086.45

Finding the Fourth Proportional to 2,646.32, 3,970.30 and 1,086.45

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Solution

The fourth proportional to 2,646.32, 3,970.30 and 1,086.45 is: 1,630.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,646.32 : 3,970.30 = 1,086.45 : x
  2. Step 2: Convert to fraction form
    2,646.32/3,970.30 = 1,086.45/x
  3. Step 3: Cross multiply
    2,646.32x = 3,970.30 × 1,086.45
  4. Step 4: Simplify right side
    2,646.32x = 4,313,507.15
  5. Step 5: Solve for x
    x = 4,313,507.15/2,646.32
  6. Step 6: Final answer
    x = 1,630.01

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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.