Home / 3,970.05-5,476.16-2,555.57

Finding the Fourth Proportional to 3,970.05, 5,476.16 and 2,555.57

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Solution

The fourth proportional to 3,970.05, 5,476.16 and 2,555.57 is: 3,525.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.05 : 5,476.16 = 2,555.57 : x
  2. Step 2: Convert to fraction form
    3,970.05/5,476.16 = 2,555.57/x
  3. Step 3: Cross multiply
    3,970.05x = 5,476.16 × 2,555.57
  4. Step 4: Simplify right side
    3,970.05x = 13,994,689.22
  5. Step 5: Solve for x
    x = 13,994,689.22/3,970.05
  6. Step 6: Final answer
    x = 3,525.07

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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.