Home / 2,121.38-2,927.40-1,177.16

Finding the Fourth Proportional to 2,121.38, 2,927.40 and 1,177.16

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Solution

The fourth proportional to 2,121.38, 2,927.40 and 1,177.16 is: 1,624.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.38 : 2,927.40 = 1,177.16 : x
  2. Step 2: Convert to fraction form
    2,121.38/2,927.40 = 1,177.16/x
  3. Step 3: Cross multiply
    2,121.38x = 2,927.40 × 1,177.16
  4. Step 4: Simplify right side
    2,121.38x = 3,446,018.18
  5. Step 5: Solve for x
    x = 3,446,018.18/2,121.38
  6. Step 6: Final answer
    x = 1,624.42

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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.