Home / 2,121.41-2,927.19-1,177.05

Finding the Fourth Proportional to 2,121.41, 2,927.19 and 1,177.05

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Solution

The fourth proportional to 2,121.41, 2,927.19 and 1,177.05 is: 1,624.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.41 : 2,927.19 = 1,177.05 : x
  2. Step 2: Convert to fraction form
    2,121.41/2,927.19 = 1,177.05/x
  3. Step 3: Cross multiply
    2,121.41x = 2,927.19 × 1,177.05
  4. Step 4: Simplify right side
    2,121.41x = 3,445,441.29
  5. Step 5: Solve for x
    x = 3,445,441.29/2,121.41
  6. Step 6: Final answer
    x = 1,624.13

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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.