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Finding the Fourth Proportional to 6,510.88, 8,965.20 and 5,180.32

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Solution

The fourth proportional to 6,510.88, 8,965.20 and 5,180.32 is: 7,133.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,510.88 : 8,965.20 = 5,180.32 : x
  2. Step 2: Convert to fraction form
    6,510.88/8,965.20 = 5,180.32/x
  3. Step 3: Cross multiply
    6,510.88x = 8,965.20 × 5,180.32
  4. Step 4: Simplify right side
    6,510.88x = 46,442,604.86
  5. Step 5: Solve for x
    x = 46,442,604.86/6,510.88
  6. Step 6: Final answer
    x = 7,133.08

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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.