Home / 7,406.40-10,220.48-4,049.28

Finding the Fourth Proportional to 7,406.40, 10,220.48 and 4,049.28

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Solution

The fourth proportional to 7,406.40, 10,220.48 and 4,049.28 is: 5,587.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,406.40 : 10,220.48 = 4,049.28 : x
  2. Step 2: Convert to fraction form
    7,406.40/10,220.48 = 4,049.28/x
  3. Step 3: Cross multiply
    7,406.40x = 10,220.48 × 4,049.28
  4. Step 4: Simplify right side
    7,406.40x = 41,385,585.25
  5. Step 5: Solve for x
    x = 41,385,585.25/7,406.40
  6. Step 6: Final answer
    x = 5,587.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.