Home / 5,171.85-7,756.56-1,887.30

Finding the Fourth Proportional to 5,171.85, 7,756.56 and 1,887.30

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Solution

The fourth proportional to 5,171.85, 7,756.56 and 1,887.30 is: 2,830.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.85 : 7,756.56 = 1,887.30 : x
  2. Step 2: Convert to fraction form
    5,171.85/7,756.56 = 1,887.30/x
  3. Step 3: Cross multiply
    5,171.85x = 7,756.56 × 1,887.30
  4. Step 4: Simplify right side
    5,171.85x = 14,638,955.69
  5. Step 5: Solve for x
    x = 14,638,955.69/5,171.85
  6. Step 6: Final answer
    x = 2,830.51

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1.5x scale

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.