Home / 2,128.77-2,936.87-1,570.58

Finding the Fourth Proportional to 2,128.77, 2,936.87 and 1,570.58

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Solution

The fourth proportional to 2,128.77, 2,936.87 and 1,570.58 is: 2,166.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.77 : 2,936.87 = 1,570.58 : x
  2. Step 2: Convert to fraction form
    2,128.77/2,936.87 = 1,570.58/x
  3. Step 3: Cross multiply
    2,128.77x = 2,936.87 × 1,570.58
  4. Step 4: Simplify right side
    2,128.77x = 4,612,583.65
  5. Step 5: Solve for x
    x = 4,612,583.65/2,128.77
  6. Step 6: Final answer
    x = 2,166.78

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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.