Home / 2,143.72-2,955.36-2,097.15

Finding the Fourth Proportional to 2,143.72, 2,955.36 and 2,097.15

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Solution

The fourth proportional to 2,143.72, 2,955.36 and 2,097.15 is: 2,891.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.72 : 2,955.36 = 2,097.15 : x
  2. Step 2: Convert to fraction form
    2,143.72/2,955.36 = 2,097.15/x
  3. Step 3: Cross multiply
    2,143.72x = 2,955.36 × 2,097.15
  4. Step 4: Simplify right side
    2,143.72x = 6,197,833.22
  5. Step 5: Solve for x
    x = 6,197,833.22/2,143.72
  6. Step 6: Final answer
    x = 2,891.16

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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.