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Finding the Fourth Proportional to 6,480.51, 8,942.30 and 4,089.59

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Solution

The fourth proportional to 6,480.51, 8,942.30 and 4,089.59 is: 5,643.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,480.51 : 8,942.30 = 4,089.59 : x
  2. Step 2: Convert to fraction form
    6,480.51/8,942.30 = 4,089.59/x
  3. Step 3: Cross multiply
    6,480.51x = 8,942.30 × 4,089.59
  4. Step 4: Simplify right side
    6,480.51x = 36,570,275.50
  5. Step 5: Solve for x
    x = 36,570,275.50/6,480.51
  6. Step 6: Final answer
    x = 5,643.12

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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.