Home / 2,931.39-4,045.34-1,605.12

Finding the Fourth Proportional to 2,931.39, 4,045.34 and 1,605.12

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Solution

The fourth proportional to 2,931.39, 4,045.34 and 1,605.12 is: 2,215.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.39 : 4,045.34 = 1,605.12 : x
  2. Step 2: Convert to fraction form
    2,931.39/4,045.34 = 1,605.12/x
  3. Step 3: Cross multiply
    2,931.39x = 4,045.34 × 1,605.12
  4. Step 4: Simplify right side
    2,931.39x = 6,493,244.98
  5. Step 5: Solve for x
    x = 6,493,244.98/2,931.39
  6. Step 6: Final answer
    x = 2,215.07

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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.