Home / 2,931.45-4,045.53-1,605.25

Finding the Fourth Proportional to 2,931.45, 4,045.53 and 1,605.25

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Solution

The fourth proportional to 2,931.45, 4,045.53 and 1,605.25 is: 2,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.45 : 4,045.53 = 1,605.25 : x
  2. Step 2: Convert to fraction form
    2,931.45/4,045.53 = 1,605.25/x
  3. Step 3: Cross multiply
    2,931.45x = 4,045.53 × 1,605.25
  4. Step 4: Simplify right side
    2,931.45x = 6,494,087.03
  5. Step 5: Solve for x
    x = 6,494,087.03/2,931.45
  6. Step 6: Final answer
    x = 2,215.32

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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.