Home / 2,955.80-4,075.20-2,422.72

Finding the Fourth Proportional to 2,955.80, 4,075.20 and 2,422.72

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Solution

The fourth proportional to 2,955.80, 4,075.20 and 2,422.72 is: 3,340.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.80 : 4,075.20 = 2,422.72 : x
  2. Step 2: Convert to fraction form
    2,955.80/4,075.20 = 2,422.72/x
  3. Step 3: Cross multiply
    2,955.80x = 4,075.20 × 2,422.72
  4. Step 4: Simplify right side
    2,955.80x = 9,873,068.54
  5. Step 5: Solve for x
    x = 9,873,068.54/2,955.80
  6. Step 6: Final answer
    x = 3,340.24

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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.