Home / 3,750.90-5,625.36-1,117.78

Finding the Fourth Proportional to 3,750.90, 5,625.36 and 1,117.78

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Solution

The fourth proportional to 3,750.90, 5,625.36 and 1,117.78 is: 1,676.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.90 : 5,625.36 = 1,117.78 : x
  2. Step 2: Convert to fraction form
    3,750.90/5,625.36 = 1,117.78/x
  3. Step 3: Cross multiply
    3,750.90x = 5,625.36 × 1,117.78
  4. Step 4: Simplify right side
    3,750.90x = 6,287,914.90
  5. Step 5: Solve for x
    x = 6,287,914.90/3,750.90
  6. Step 6: Final answer
    x = 1,676.37

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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.