Home / 3,756.40-5,631.90-2,113.45

Finding the Fourth Proportional to 3,756.40, 5,631.90 and 2,113.45

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Solution

The fourth proportional to 3,756.40, 5,631.90 and 2,113.45 is: 3,168.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,756.40 : 5,631.90 = 2,113.45 : x
  2. Step 2: Convert to fraction form
    3,756.40/5,631.90 = 2,113.45/x
  3. Step 3: Cross multiply
    3,756.40x = 5,631.90 × 2,113.45
  4. Step 4: Simplify right side
    3,756.40x = 11,902,739.06
  5. Step 5: Solve for x
    x = 11,902,739.06/3,756.40
  6. Step 6: Final answer
    x = 3,168.66

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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.