Home / 2,921.13-4,382.10-1,071.77

Finding the Fourth Proportional to 2,921.13, 4,382.10 and 1,071.77

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Solution

The fourth proportional to 2,921.13, 4,382.10 and 1,071.77 is: 1,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.13 : 4,382.10 = 1,071.77 : x
  2. Step 2: Convert to fraction form
    2,921.13/4,382.10 = 1,071.77/x
  3. Step 3: Cross multiply
    2,921.13x = 4,382.10 × 1,071.77
  4. Step 4: Simplify right side
    2,921.13x = 4,696,581.41
  5. Step 5: Solve for x
    x = 4,696,581.41/2,921.13
  6. Step 6: Final answer
    x = 1,607.80

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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.