Home / 2,426.30-3,640.80-1,039.40

Finding the Fourth Proportional to 2,426.30, 3,640.80 and 1,039.40

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Solution

The fourth proportional to 2,426.30, 3,640.80 and 1,039.40 is: 1,559.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,426.30 : 3,640.80 = 1,039.40 : x
  2. Step 2: Convert to fraction form
    2,426.30/3,640.80 = 1,039.40/x
  3. Step 3: Cross multiply
    2,426.30x = 3,640.80 × 1,039.40
  4. Step 4: Simplify right side
    2,426.30x = 3,784,247.52
  5. Step 5: Solve for x
    x = 3,784,247.52/2,426.30
  6. Step 6: Final answer
    x = 1,559.68

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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.