Home / 7,057.60-9,738.80-3,913.72

Finding the Fourth Proportional to 7,057.60, 9,738.80 and 3,913.72

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Solution

The fourth proportional to 7,057.60, 9,738.80 and 3,913.72 is: 5,400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,057.60 : 9,738.80 = 3,913.72 : x
  2. Step 2: Convert to fraction form
    7,057.60/9,738.80 = 3,913.72/x
  3. Step 3: Cross multiply
    7,057.60x = 9,738.80 × 3,913.72
  4. Step 4: Simplify right side
    7,057.60x = 38,114,936.34
  5. Step 5: Solve for x
    x = 38,114,936.34/7,057.60
  6. Step 6: Final answer
    x = 5,400.55

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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.