Home / 3,140.64-4,322.16-2,440.80

Finding the Fourth Proportional to 3,140.64, 4,322.16 and 2,440.80

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Solution

The fourth proportional to 3,140.64, 4,322.16 and 2,440.80 is: 3,359.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.64 : 4,322.16 = 2,440.80 : x
  2. Step 2: Convert to fraction form
    3,140.64/4,322.16 = 2,440.80/x
  3. Step 3: Cross multiply
    3,140.64x = 4,322.16 × 2,440.80
  4. Step 4: Simplify right side
    3,140.64x = 10,549,528.13
  5. Step 5: Solve for x
    x = 10,549,528.13/3,140.64
  6. Step 6: Final answer
    x = 3,359.04

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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.