Home / 2,130.08-2,940.55-1,422.34

Finding the Fourth Proportional to 2,130.08, 2,940.55 and 1,422.34

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Solution

The fourth proportional to 2,130.08, 2,940.55 and 1,422.34 is: 1,963.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.08 : 2,940.55 = 1,422.34 : x
  2. Step 2: Convert to fraction form
    2,130.08/2,940.55 = 1,422.34/x
  3. Step 3: Cross multiply
    2,130.08x = 2,940.55 × 1,422.34
  4. Step 4: Simplify right side
    2,130.08x = 4,182,450.98
  5. Step 5: Solve for x
    x = 4,182,450.98/2,130.08
  6. Step 6: Final answer
    x = 1,963.52

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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.