Home / 2,070.81-2,857.77-1,126.61

Finding the Fourth Proportional to 2,070.81, 2,857.77 and 1,126.61

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Solution

The fourth proportional to 2,070.81, 2,857.77 and 1,126.61 is: 1,554.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.81 : 2,857.77 = 1,126.61 : x
  2. Step 2: Convert to fraction form
    2,070.81/2,857.77 = 1,126.61/x
  3. Step 3: Cross multiply
    2,070.81x = 2,857.77 × 1,126.61
  4. Step 4: Simplify right side
    2,070.81x = 3,219,582.23
  5. Step 5: Solve for x
    x = 3,219,582.23/2,070.81
  6. Step 6: Final answer
    x = 1,554.75

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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.