Home / 2,070.56-2,857.38-1,186.55

Finding the Fourth Proportional to 2,070.56, 2,857.38 and 1,186.55

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Solution

The fourth proportional to 2,070.56, 2,857.38 and 1,186.55 is: 1,637.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.56 : 2,857.38 = 1,186.55 : x
  2. Step 2: Convert to fraction form
    2,070.56/2,857.38 = 1,186.55/x
  3. Step 3: Cross multiply
    2,070.56x = 2,857.38 × 1,186.55
  4. Step 4: Simplify right side
    2,070.56x = 3,390,416.22
  5. Step 5: Solve for x
    x = 3,390,416.22/2,070.56
  6. Step 6: Final answer
    x = 1,637.44

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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.