Home / 3,240.15-4,470.30-2,122.35

Finding the Fourth Proportional to 3,240.15, 4,470.30 and 2,122.35

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Solution

The fourth proportional to 3,240.15, 4,470.30 and 2,122.35 is: 2,928.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.15 : 4,470.30 = 2,122.35 : x
  2. Step 2: Convert to fraction form
    3,240.15/4,470.30 = 2,122.35/x
  3. Step 3: Cross multiply
    3,240.15x = 4,470.30 × 2,122.35
  4. Step 4: Simplify right side
    3,240.15x = 9,487,541.21
  5. Step 5: Solve for x
    x = 9,487,541.21/3,240.15
  6. Step 6: Final answer
    x = 2,928.12

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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.