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Finding the Fourth Proportional to 7,660.80, 10,572.42 and 4,303.50

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Solution

The fourth proportional to 7,660.80, 10,572.42 and 4,303.50 is: 5,939.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,660.80 : 10,572.42 = 4,303.50 : x
  2. Step 2: Convert to fraction form
    7,660.80/10,572.42 = 4,303.50/x
  3. Step 3: Cross multiply
    7,660.80x = 10,572.42 × 4,303.50
  4. Step 4: Simplify right side
    7,660.80x = 45,498,409.47
  5. Step 5: Solve for x
    x = 45,498,409.47/7,660.80
  6. Step 6: Final answer
    x = 5,939.12

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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.