Home / 3,138.15-4,330.63-1,740.90

Finding the Fourth Proportional to 3,138.15, 4,330.63 and 1,740.90

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Solution

The fourth proportional to 3,138.15, 4,330.63 and 1,740.90 is: 2,402.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.15 : 4,330.63 = 1,740.90 : x
  2. Step 2: Convert to fraction form
    3,138.15/4,330.63 = 1,740.90/x
  3. Step 3: Cross multiply
    3,138.15x = 4,330.63 × 1,740.90
  4. Step 4: Simplify right side
    3,138.15x = 7,539,193.77
  5. Step 5: Solve for x
    x = 7,539,193.77/3,138.15
  6. Step 6: Final answer
    x = 2,402.43

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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.