Home / 2,070.60-2,857.67-1,186.68

Finding the Fourth Proportional to 2,070.60, 2,857.67 and 1,186.68

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Solution

The fourth proportional to 2,070.60, 2,857.67 and 1,186.68 is: 1,637.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.60 : 2,857.67 = 1,186.68 : x
  2. Step 2: Convert to fraction form
    2,070.60/2,857.67 = 1,186.68/x
  3. Step 3: Cross multiply
    2,070.60x = 2,857.67 × 1,186.68
  4. Step 4: Simplify right side
    2,070.60x = 3,391,139.84
  5. Step 5: Solve for x
    x = 3,391,139.84/2,070.60
  6. Step 6: Final answer
    x = 1,637.76

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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.