Home / 3,970.09-5,478.33-2,376.42

Finding the Fourth Proportional to 3,970.09, 5,478.33 and 2,376.42

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Solution

The fourth proportional to 3,970.09, 5,478.33 and 2,376.42 is: 3,279.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.09 : 5,478.33 = 2,376.42 : x
  2. Step 2: Convert to fraction form
    3,970.09/5,478.33 = 2,376.42/x
  3. Step 3: Cross multiply
    3,970.09x = 5,478.33 × 2,376.42
  4. Step 4: Simplify right side
    3,970.09x = 13,018,812.98
  5. Step 5: Solve for x
    x = 13,018,812.98/3,970.09
  6. Step 6: Final answer
    x = 3,279.22

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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.