Home / 2,997.39-4,130.56-2,156.61

Finding the Fourth Proportional to 2,997.39, 4,130.56 and 2,156.61

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Solution

The fourth proportional to 2,997.39, 4,130.56 and 2,156.61 is: 2,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,997.39 : 4,130.56 = 2,156.61 : x
  2. Step 2: Convert to fraction form
    2,997.39/4,130.56 = 2,156.61/x
  3. Step 3: Cross multiply
    2,997.39x = 4,130.56 × 2,156.61
  4. Step 4: Simplify right side
    2,997.39x = 8,908,007.00
  5. Step 5: Solve for x
    x = 8,908,007.00/2,997.39
  6. Step 6: Final answer
    x = 2,971.92

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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.