Home / 5,137.90-7,078.02-4,887.78

Finding the Fourth Proportional to 5,137.90, 7,078.02 and 4,887.78

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Solution

The fourth proportional to 5,137.90, 7,078.02 and 4,887.78 is: 6,733.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.90 : 7,078.02 = 4,887.78 : x
  2. Step 2: Convert to fraction form
    5,137.90/7,078.02 = 4,887.78/x
  3. Step 3: Cross multiply
    5,137.90x = 7,078.02 × 4,887.78
  4. Step 4: Simplify right side
    5,137.90x = 34,595,804.60
  5. Step 5: Solve for x
    x = 34,595,804.60/5,137.90
  6. Step 6: Final answer
    x = 6,733.45

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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.