Home / 8,385.20-11,572.44-5,730.56

Finding the Fourth Proportional to 8,385.20, 11,572.44 and 5,730.56

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Solution

The fourth proportional to 8,385.20, 11,572.44 and 5,730.56 is: 7,908.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.20 : 11,572.44 = 5,730.56 : x
  2. Step 2: Convert to fraction form
    8,385.20/11,572.44 = 5,730.56/x
  3. Step 3: Cross multiply
    8,385.20x = 11,572.44 × 5,730.56
  4. Step 4: Simplify right side
    8,385.20x = 66,316,561.77
  5. Step 5: Solve for x
    x = 66,316,561.77/8,385.20
  6. Step 6: Final answer
    x = 7,908.76

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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.