Home / 4,912-7,376.16-2,689.52

Finding the Fourth Proportional to 4,912, 7,376.16 and 2,689.52

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Solution

The fourth proportional to 4,912, 7,376.16 and 2,689.52 is: 4,038.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912 : 7,376.16 = 2,689.52 : x
  2. Step 2: Convert to fraction form
    4,912/7,376.16 = 2,689.52/x
  3. Step 3: Cross multiply
    4,912x = 7,376.16 × 2,689.52
  4. Step 4: Simplify right side
    4,912x = 19,838,329.84
  5. Step 5: Solve for x
    x = 19,838,329.84/4,912
  6. Step 6: Final answer
    x = 4,038.75

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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.