Home / 5,430.08-8,143.66-1,919.63

Finding the Fourth Proportional to 5,430.08, 8,143.66 and 1,919.63

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Solution

The fourth proportional to 5,430.08, 8,143.66 and 1,919.63 is: 2,878.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.08 : 8,143.66 = 1,919.63 : x
  2. Step 2: Convert to fraction form
    5,430.08/8,143.66 = 1,919.63/x
  3. Step 3: Cross multiply
    5,430.08x = 8,143.66 × 1,919.63
  4. Step 4: Simplify right side
    5,430.08x = 15,632,763.73
  5. Step 5: Solve for x
    x = 15,632,763.73/5,430.08
  6. Step 6: Final answer
    x = 2,878.92

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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.