Home / 2,985.64-4,111.84-2,921.08

Finding the Fourth Proportional to 2,985.64, 4,111.84 and 2,921.08

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Solution

The fourth proportional to 2,985.64, 4,111.84 and 2,921.08 is: 4,022.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.64 : 4,111.84 = 2,921.08 : x
  2. Step 2: Convert to fraction form
    2,985.64/4,111.84 = 2,921.08/x
  3. Step 3: Cross multiply
    2,985.64x = 4,111.84 × 2,921.08
  4. Step 4: Simplify right side
    2,985.64x = 12,011,013.59
  5. Step 5: Solve for x
    x = 12,011,013.59/2,985.64
  6. Step 6: Final answer
    x = 4,022.93

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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.