Home / 3,438.45-5,155.65-1,246.20

Finding the Fourth Proportional to 3,438.45, 5,155.65 and 1,246.20

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Solution

The fourth proportional to 3,438.45, 5,155.65 and 1,246.20 is: 1,868.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.45 : 5,155.65 = 1,246.20 : x
  2. Step 2: Convert to fraction form
    3,438.45/5,155.65 = 1,246.20/x
  3. Step 3: Cross multiply
    3,438.45x = 5,155.65 × 1,246.20
  4. Step 4: Simplify right side
    3,438.45x = 6,424,971.03
  5. Step 5: Solve for x
    x = 6,424,971.03/3,438.45
  6. Step 6: Final answer
    x = 1,868.57

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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.