Home / 5,184.50-7,776.77-1,288.90

Finding the Fourth Proportional to 5,184.50, 7,776.77 and 1,288.90

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Solution

The fourth proportional to 5,184.50, 7,776.77 and 1,288.90 is: 1,933.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,184.50 : 7,776.77 = 1,288.90 : x
  2. Step 2: Convert to fraction form
    5,184.50/7,776.77 = 1,288.90/x
  3. Step 3: Cross multiply
    5,184.50x = 7,776.77 × 1,288.90
  4. Step 4: Simplify right side
    5,184.50x = 10,023,505.75
  5. Step 5: Solve for x
    x = 10,023,505.75/5,184.50
  6. Step 6: Final answer
    x = 1,933.36

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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.