Home / 2,921.77-4,381.64-2,097.59

Finding the Fourth Proportional to 2,921.77, 4,381.64 and 2,097.59

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Solution

The fourth proportional to 2,921.77, 4,381.64 and 2,097.59 is: 3,145.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.77 : 4,381.64 = 2,097.59 : x
  2. Step 2: Convert to fraction form
    2,921.77/4,381.64 = 2,097.59/x
  3. Step 3: Cross multiply
    2,921.77x = 4,381.64 × 2,097.59
  4. Step 4: Simplify right side
    2,921.77x = 9,190,873.76
  5. Step 5: Solve for x
    x = 9,190,873.76/2,921.77
  6. Step 6: Final answer
    x = 3,145.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.