Home / 4,897.88-6,755.72-3,128.70

Finding the Fourth Proportional to 4,897.88, 6,755.72 and 3,128.70

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Solution

The fourth proportional to 4,897.88, 6,755.72 and 3,128.70 is: 4,315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,897.88 : 6,755.72 = 3,128.70 : x
  2. Step 2: Convert to fraction form
    4,897.88/6,755.72 = 3,128.70/x
  3. Step 3: Cross multiply
    4,897.88x = 6,755.72 × 3,128.70
  4. Step 4: Simplify right side
    4,897.88x = 21,136,621.16
  5. Step 5: Solve for x
    x = 21,136,621.16/4,897.88
  6. Step 6: Final answer
    x = 4,315.46

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1.5x scale

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.