Home / 4,430.80-6,647.40-3,947.20

Finding the Fourth Proportional to 4,430.80, 6,647.40 and 3,947.20

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Solution

The fourth proportional to 4,430.80, 6,647.40 and 3,947.20 is: 5,921.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,430.80 : 6,647.40 = 3,947.20 : x
  2. Step 2: Convert to fraction form
    4,430.80/6,647.40 = 3,947.20/x
  3. Step 3: Cross multiply
    4,430.80x = 6,647.40 × 3,947.20
  4. Step 4: Simplify right side
    4,430.80x = 26,238,617.28
  5. Step 5: Solve for x
    x = 26,238,617.28/4,430.80
  6. Step 6: Final answer
    x = 5,921.87

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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.