Home / 7,628.78-10,529.80-4,485.98

Finding the Fourth Proportional to 7,628.78, 10,529.80 and 4,485.98

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Solution

The fourth proportional to 7,628.78, 10,529.80 and 4,485.98 is: 6,191.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,628.78 : 10,529.80 = 4,485.98 : x
  2. Step 2: Convert to fraction form
    7,628.78/10,529.80 = 4,485.98/x
  3. Step 3: Cross multiply
    7,628.78x = 10,529.80 × 4,485.98
  4. Step 4: Simplify right side
    7,628.78x = 47,236,472.20
  5. Step 5: Solve for x
    x = 47,236,472.20/7,628.78
  6. Step 6: Final answer
    x = 6,191.88

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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.