Home / 2,920.85-4,381.55-1,071.52

Finding the Fourth Proportional to 2,920.85, 4,381.55 and 1,071.52

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Solution

The fourth proportional to 2,920.85, 4,381.55 and 1,071.52 is: 1,607.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.85 : 4,381.55 = 1,071.52 : x
  2. Step 2: Convert to fraction form
    2,920.85/4,381.55 = 1,071.52/x
  3. Step 3: Cross multiply
    2,920.85x = 4,381.55 × 1,071.52
  4. Step 4: Simplify right side
    2,920.85x = 4,694,918.46
  5. Step 5: Solve for x
    x = 4,694,918.46/2,920.85
  6. Step 6: Final answer
    x = 1,607.38

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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.