Home / 2,121.17-2,927.21-1,177.11

Finding the Fourth Proportional to 2,121.17, 2,927.21 and 1,177.11

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Solution

The fourth proportional to 2,121.17, 2,927.21 and 1,177.11 is: 1,624.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.17 : 2,927.21 = 1,177.11 : x
  2. Step 2: Convert to fraction form
    2,121.17/2,927.21 = 1,177.11/x
  3. Step 3: Cross multiply
    2,121.17x = 2,927.21 × 1,177.11
  4. Step 4: Simplify right side
    2,121.17x = 3,445,648.16
  5. Step 5: Solve for x
    x = 3,445,648.16/2,121.17
  6. Step 6: Final answer
    x = 1,624.41

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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.