Home / 2,955.97-4,080.88-2,158.50

Finding the Fourth Proportional to 2,955.97, 4,080.88 and 2,158.50

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Solution

The fourth proportional to 2,955.97, 4,080.88 and 2,158.50 is: 2,979.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.97 : 4,080.88 = 2,158.50 : x
  2. Step 2: Convert to fraction form
    2,955.97/4,080.88 = 2,158.50/x
  3. Step 3: Cross multiply
    2,955.97x = 4,080.88 × 2,158.50
  4. Step 4: Simplify right side
    2,955.97x = 8,808,574.53
  5. Step 5: Solve for x
    x = 8,808,574.53/2,955.97
  6. Step 6: Final answer
    x = 2,979.93

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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.