Home / 3,240.48-4,470.19-2,178.48

Finding the Fourth Proportional to 3,240.48, 4,470.19 and 2,178.48

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Solution

The fourth proportional to 3,240.48, 4,470.19 and 2,178.48 is: 3,005.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.48 : 4,470.19 = 2,178.48 : x
  2. Step 2: Convert to fraction form
    3,240.48/4,470.19 = 2,178.48/x
  3. Step 3: Cross multiply
    3,240.48x = 4,470.19 × 2,178.48
  4. Step 4: Simplify right side
    3,240.48x = 9,738,219.51
  5. Step 5: Solve for x
    x = 9,738,219.51/3,240.48
  6. Step 6: Final answer
    x = 3,005.18

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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.