Home / 2,931.66-4,045.54-1,605.11

Finding the Fourth Proportional to 2,931.66, 4,045.54 and 1,605.11

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Solution

The fourth proportional to 2,931.66, 4,045.54 and 1,605.11 is: 2,214.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.66 : 4,045.54 = 1,605.11 : x
  2. Step 2: Convert to fraction form
    2,931.66/4,045.54 = 1,605.11/x
  3. Step 3: Cross multiply
    2,931.66x = 4,045.54 × 1,605.11
  4. Step 4: Simplify right side
    2,931.66x = 6,493,528.68
  5. Step 5: Solve for x
    x = 6,493,528.68/2,931.66
  6. Step 6: Final answer
    x = 2,214.97

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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.