Home / 2,121.80-2,927.54-1,423.17

Finding the Fourth Proportional to 2,121.80, 2,927.54 and 1,423.17

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Solution

The fourth proportional to 2,121.80, 2,927.54 and 1,423.17 is: 1,963.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.80 : 2,927.54 = 1,423.17 : x
  2. Step 2: Convert to fraction form
    2,121.80/2,927.54 = 1,423.17/x
  3. Step 3: Cross multiply
    2,121.80x = 2,927.54 × 1,423.17
  4. Step 4: Simplify right side
    2,121.80x = 4,166,390.66
  5. Step 5: Solve for x
    x = 4,166,390.66/2,121.80
  6. Step 6: Final answer
    x = 1,963.62

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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.