Home / 3,240.86-4,471.34-2,123.06

Finding the Fourth Proportional to 3,240.86, 4,471.34 and 2,123.06

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Solution

The fourth proportional to 3,240.86, 4,471.34 and 2,123.06 is: 2,929.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.86 : 4,471.34 = 2,123.06 : x
  2. Step 2: Convert to fraction form
    3,240.86/4,471.34 = 2,123.06/x
  3. Step 3: Cross multiply
    3,240.86x = 4,471.34 × 2,123.06
  4. Step 4: Simplify right side
    3,240.86x = 9,492,890.13
  5. Step 5: Solve for x
    x = 9,492,890.13/3,240.86
  6. Step 6: Final answer
    x = 2,929.13

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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.