Home / 2,070.31-2,857.44-1,186.71

Finding the Fourth Proportional to 2,070.31, 2,857.44 and 1,186.71

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Solution

The fourth proportional to 2,070.31, 2,857.44 and 1,186.71 is: 1,637.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.31 : 2,857.44 = 1,186.71 : x
  2. Step 2: Convert to fraction form
    2,070.31/2,857.44 = 1,186.71/x
  3. Step 3: Cross multiply
    2,070.31x = 2,857.44 × 1,186.71
  4. Step 4: Simplify right side
    2,070.31x = 3,390,952.62
  5. Step 5: Solve for x
    x = 3,390,952.62/2,070.31
  6. Step 6: Final answer
    x = 1,637.90

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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.