Home / 2,121.63-2,927.84-1,190.13

Finding the Fourth Proportional to 2,121.63, 2,927.84 and 1,190.13

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Solution

The fourth proportional to 2,121.63, 2,927.84 and 1,190.13 is: 1,642.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.63 : 2,927.84 = 1,190.13 : x
  2. Step 2: Convert to fraction form
    2,121.63/2,927.84 = 1,190.13/x
  3. Step 3: Cross multiply
    2,121.63x = 2,927.84 × 1,190.13
  4. Step 4: Simplify right side
    2,121.63x = 3,484,510.22
  5. Step 5: Solve for x
    x = 3,484,510.22/2,121.63
  6. Step 6: Final answer
    x = 1,642.37

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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.