Home / 2,121.68-2,927.52-1,237.56

Finding the Fourth Proportional to 2,121.68, 2,927.52 and 1,237.56

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Solution

The fourth proportional to 2,121.68, 2,927.52 and 1,237.56 is: 1,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.68 : 2,927.52 = 1,237.56 : x
  2. Step 2: Convert to fraction form
    2,121.68/2,927.52 = 1,237.56/x
  3. Step 3: Cross multiply
    2,121.68x = 2,927.52 × 1,237.56
  4. Step 4: Simplify right side
    2,121.68x = 3,622,981.65
  5. Step 5: Solve for x
    x = 3,622,981.65/2,121.68
  6. Step 6: Final answer
    x = 1,707.60

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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.