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Finding the Fourth Proportional to 2,130.90, 2,940.89 and 2,062.86

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Solution

The fourth proportional to 2,130.90, 2,940.89 and 2,062.86 is: 2,846.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.90 : 2,940.89 = 2,062.86 : x
  2. Step 2: Convert to fraction form
    2,130.90/2,940.89 = 2,062.86/x
  3. Step 3: Cross multiply
    2,130.90x = 2,940.89 × 2,062.86
  4. Step 4: Simplify right side
    2,130.90x = 6,066,634.03
  5. Step 5: Solve for x
    x = 6,066,634.03/2,130.90
  6. Step 6: Final answer
    x = 2,846.98

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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.