Home / 2,072.32-2,859.84-1,128.13

Finding the Fourth Proportional to 2,072.32, 2,859.84 and 1,128.13

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Solution

The fourth proportional to 2,072.32, 2,859.84 and 1,128.13 is: 1,556.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.32 : 2,859.84 = 1,128.13 : x
  2. Step 2: Convert to fraction form
    2,072.32/2,859.84 = 1,128.13/x
  3. Step 3: Cross multiply
    2,072.32x = 2,859.84 × 1,128.13
  4. Step 4: Simplify right side
    2,072.32x = 3,226,264.15
  5. Step 5: Solve for x
    x = 3,226,264.15/2,072.32
  6. Step 6: Final answer
    x = 1,556.84

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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.