Home / 4,720.90-7,079.71-2,380

Finding the Fourth Proportional to 4,720.90, 7,079.71 and 2,380

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Solution

The fourth proportional to 4,720.90, 7,079.71 and 2,380 is: 3,569.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.90 : 7,079.71 = 2,380 : x
  2. Step 2: Convert to fraction form
    4,720.90/7,079.71 = 2,380/x
  3. Step 3: Cross multiply
    4,720.90x = 7,079.71 × 2,380
  4. Step 4: Simplify right side
    4,720.90x = 16,849,709.80
  5. Step 5: Solve for x
    x = 16,849,709.80/4,720.90
  6. Step 6: Final answer
    x = 3,569.17

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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.