Home / 5,155.05-7,734.66-1,868.40

Finding the Fourth Proportional to 5,155.05, 7,734.66 and 1,868.40

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Solution

The fourth proportional to 5,155.05, 7,734.66 and 1,868.40 is: 2,803.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.05 : 7,734.66 = 1,868.40 : x
  2. Step 2: Convert to fraction form
    5,155.05/7,734.66 = 1,868.40/x
  3. Step 3: Cross multiply
    5,155.05x = 7,734.66 × 1,868.40
  4. Step 4: Simplify right side
    5,155.05x = 14,451,438.74
  5. Step 5: Solve for x
    x = 14,451,438.74/5,155.05
  6. Step 6: Final answer
    x = 2,803.36

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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.